INNOVATE (VATE) 10-Q 9 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 31, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	HC2 Holdings, Inc.
Entity Central Index Key	1,006,837
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		25,592,356
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Services revenue	$ 151,933	$ 41,267	$ 373,492	$ 126,731
Sales revenue	125,534	138,166	386,765	192,642
Net revenue	277,467	179,433	760,257	319,373
Operating expenses:
Cost of revenue - services	138,099	39,464	334,608	120,101
Cost of revenue - sales	103,375	119,175	324,820	162,505
Selling, general and administrative	27,830	20,246	77,359	40,482
Depreciation and amortization	6,593	921	16,835	1,475
Gain on sale or disposal of assets	(1,957)	(448)	(986)	(81)
Lease termination costs	1,124	0	1,124	0
Total operating expenses	275,064	179,358	753,760	324,482
Income (loss) from operations	2,403	75	6,497	(5,109)
Interest expense	(10,343)	(2,103)	(28,992)	(3,116)
Amortization of debt discount	(40)	(805)	(216)	(1,381)
Loss on early extinguishment or restructuring of debt	0	(6,947)	0	(6,947)
Other income (expense), net	1,216	(1,092)	(3,528)	524
Foreign currency transaction gain	1,099	170	2,150	573
Loss from continuing operations before income (loss) from equity investees and income tax benefit (expense)	(5,665)	(10,702)	(24,089)	(15,456)
Income (loss) from equity investees	535	(288)	(724)	(288)
Income tax benefit (expense)	649	(4,515)	4,018	(6,470)
Loss from continuing operations	(4,481)	(15,505)	(20,795)	(22,214)
Loss from discontinued operations	(24)	(106)	(44)	(62)
Gain (loss) from sale of discontinued operations	0	663	0	(121)
Net loss	(4,505)	(14,948)	(20,839)	(22,397)
Less: Net income attributable to noncontrolling interest	(65)	(931)	(8)	(1,990)
Net loss attributable to HC2 Holdings, Inc.	(4,570)	(15,879)	(20,847)	(24,387)
Less: Preferred stock dividends and accretion	1,035	1,004	3,212	1,204
Net loss attributable to common stock and participating preferred stockholders	$ (5,605)	$ (16,883)	$ (24,059)	$ (25,591)
Basic loss per common share:
Loss from continuing operations attributable to HC2 Holdings, Inc. (in dollars per share)	$ (0.22)	$ (0.75)	$ (0.96)	$ (1.38)
Gain (loss) from sale of discontinued operations (in dollars per share)	0	0.03	0	(0.01)
Net loss attributable to HC2 Holdings, Inc. (in dollars per share)	(0.22)	(0.72)	(0.96)	(1.39)
Diluted loss per common share:
Loss from continuing operations attributable to HC2 (in dollars per share)	(0.22)	(0.75)	(0.96)	(1.38)
Gain (loss) from sale of discontinued operations (in dollars per share)	0	0.03	0	(0.01)
Net loss attributable to HC2 Holdings, Inc. (in dollars per share)	$ (0.22)	$ (0.72)	$ (0.96)	$ (1.39)
Weighted average common shares outstanding:
Basic (in shares)	25,592	23,372	25,093	18,348
Diluted (in shares)	25,592	23,372	25,093	18,348

CONDENSED CONSOLIDATED STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (INCOME) LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (4,505)	$ (14,948)	$ (20,839)	$ (22,397)
Other comprehensive loss
Foreign currency translation adjustment	(6,126)	(21)	(7,998)	(155)
Unrealized loss on available-for-sale securities, net of tax	(2,008)	(1,655)	(5,097)	(1,655)
Less: Comprehensive income attributable to the noncontrolling interest	(65)	(931)	(8)	(1,990)
Comprehensive loss attributable to HC2 Holdings, Inc.	$ (12,704)	$ (17,555)	$ (33,942)	$ (26,197)

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 81,066	$ 107,978
Short-term investments	3,625	4,867
Accounts receivable (net of allowance for doubtful accounts receivable of $1,576 and $2,760 at September 30, 2015 and December 31, 2014, respectively)	187,474	151,558
Costs and recognized earnings in excess of billings on uncompleted contracts	37,266	28,098
Deferred tax asset - current	1,701	1,701
Inventories	14,408	14,975
Prepaid expenses and other current assets	27,835	22,455
Assets held for sale	6,349	3,865
Total current assets	359,724	335,497
Restricted cash	7,196	6,467
Long-term investments	77,154	48,674
Property, plant and equipment, net	221,842	239,851
Goodwill	30,665	27,990
Other intangible assets, net	26,674	31,144
Deferred tax asset - long-term	23,571	15,811
Other assets	18,201	18,614
Total assets	765,027	724,048
Current liabilities:
Accounts payable	65,573	79,794
Accrued interconnection costs	36,689	9,717
Accrued payroll and employee benefits	22,127	20,023
Accrued expenses and other current liabilities	48,338	34,042
Billings in excess of costs and recognized earnings on uncompleted contracts	20,045	41,959
Accrued income taxes	1,470	512
Accrued interest	11,567	3,125
Current portion of long-term debt	13,454	10,444
Current portion of pension liability	0	5,966
Total current liabilities	219,263	205,582
Long-term debt	374,404	332,927
Pension liability	27,664	31,244
Other liabilities	8,151	1,617
Total liabilities	$ 629,482	$ 571,370
Commitments and contingencies (See Note 11)
Temporary equity (See Note 13)
Preferred stock, $0.001 par value – 20,000,000 shares authorized; Series A - 30,000 shares issued and outstanding at September 30, 2015 and December 31, 2014; Series A-1 - 10,000 and 11,000 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively; Series A-2 - 14,000 and 0 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	$ 53,403	$ 39,845
Stockholders' equity:
Common stock, $0.001 par value – 80,000,000 shares authorized; 25,623,982 and 23,844,711 shares issued and 25,592,356 and 23,813,085 shares outstanding at September 30, 2015 and December 31, 2014, respectively	26	24
Additional paid-in capital	151,662	147,081
Accumulated deficit	(62,727)	(41,880)
Treasury stock, at cost – 31,626 shares at September 30, 2015 and December 31, 2014	(378)	(378)
Accumulated other comprehensive loss	(28,273)	(15,178)
Total HC2 Holdings, Inc. stockholders' equity before noncontrolling interest	60,310	89,669
Noncontrolling interest	21,832	23,164
Total stockholders' equity	82,142	112,833
Total liabilities, temporary equity and stockholders' equity	$ 765,027	$ 724,048

CONDENSED CONSOLIDATED BALANCE5

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Accounts receivable, allowance for doubtful accounts receivable	$ 1,576	$ 2,760
Temporary equity (See Note 13)
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	25,623,982	23,844,711
Common stock, shares outstanding (in shares)	25,592,356	23,813,085
Treasury stock, shares (in shares)	31,626	31,626
Series A Preferred Stock
Temporary equity (See Note 13)
Preferred stock, shares issued (in shares)	30,000	30,000
Preferred stock, shares outstanding (in shares)	30,000	30,000
Series A-1 Preferred Stock
Temporary equity (See Note 13)
Preferred stock, shares issued (in shares)	10,000	11,000
Preferred stock, shares outstanding (in shares)	10,000	11,000
Series A-2 Preferred Stock
Temporary equity (See Note 13)
Preferred stock, shares issued (in shares)	14,000	0
Preferred stock, shares outstanding (in shares)	14,000	0

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Income (Loss)	Non- controlling Interest
Balance at Dec. 31, 2013	$ 54,409	$ 14	$ 98,598	$ (378)	$ (29,773)	$ (14,052)	$ 0
Balance (in shares) at Dec. 31, 2013		14,226
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	1,724		1,724
Proceeds from the exercise of warrants and stock options	24,348	$ 8	24,340
Proceeds from the exercise of warrants and stock options (in shares)		7,590
Taxes paid in lieu of shares issued for share-based compensation	(41)		(41)
Preferred stock dividends and accretion	(1,204)		(1,204)
Preferred stock beneficial conversion feature	659		659
Issuance of common stock	6,000	$ 2	5,998
Issuance of common stock (in shares)		1,500
Issuance of restricted stock	0
Issuance of restricted stock (in shares)		342
Acquisition of noncontrolling interest	61,080						61,080
Excess of fair value of net assets over purchase price of acquired company	4,674		4,674
Net (loss) income	(22,397)				(24,387)	0	1,990
Foreign currency translation adjustment	(155)					(155)
Unrealized gain (loss) on available-for-sale securities	(1,655)					(1,655)
Balance at Sep. 30, 2014	127,442	$ 24	134,748	(378)	(54,160)	(15,862)	63,070
Balance (in shares) at Sep. 30, 2014		23,658
Balance at Dec. 31, 2014	112,833	$ 24	147,081	(378)	(41,880)	(15,178)	23,164
Balance (in shares) at Dec. 31, 2014		23,813
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	6,943		6,943
Dividend paid to noncontrolling interest	(1,038)						(1,038)
Preferred stock dividends and accretion	(3,212)		(3,212)
Preferred stock beneficial conversion feature	(375)		(375)
Issuance of common stock	0
Issuance of common stock (in shares)		5
Issuance of restricted stock	2	$ 2
Issuance of restricted stock (in shares)		1,539
Conversion of preferred stock to common stock	1,000		1,000
Conversion of preferred stock to common stock (in shares)		235
Acquisition of noncontrolling interest	(259)						(259)
Excess book value over fair value of purchased noncontrolling interest	0		43				(43)
Excess of fair value of net assets over purchase price of acquired company	182		182
Net (loss) income	(20,839)				(20,847)		8
Foreign currency translation adjustment	(7,998)					(7,998)
Unrealized gain (loss) on available-for-sale securities	(5,097)					(5,097)
Balance at Sep. 30, 2015	$ 82,142	$ 26	$ 151,662	$ (378)	$ (62,727)	$ (28,273)	$ 21,832
Balance (in shares) at Sep. 30, 2015		25,592

CONDENSED CONSOLIDATED STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (20,839)	$ (22,397)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Provision for doubtful accounts receivable	325	(114)
Share-based compensation expense	6,943	1,725
Depreciation and amortization	22,570	4,071
Amortization of deferred financing costs	1,030	288
Lease termination costs	1,124	0
(Gain) loss on sale or disposal of assets	(986)	635
(Gain) loss on sale of investments	(399)	(437)
Equity investment (income)/loss	724	288
Amortization of debt discount	216	1,381
Unrealized (gain) loss on investments	(32)	0
Loss on early extinguishment of debt	0	6,947
Deferred income taxes	(8,143)	1
Other, net	225	0
Unrealized foreign currency transaction (gain) loss on intercompany and foreign debt	90	57
Changes in assets and liabilities, net of acquisitions:
(Increase) decrease in accounts receivable	(36,099)	6,037
(Increase) decrease in costs and recognized earnings in excess of billings on uncompleted contracts	(9,253)	522
(Increase) decrease in inventories	455	(1,984)
(Increase) decrease in prepaid expenses and other current assets	(4,799)	25,539
(Increase) decrease in other assets	1,483	1,558
Increase (decrease) in accounts payable	(15,675)	1,751
Increase (decrease) in accrued interconnection costs	26,915	(2,618)
Increase (decrease) in accrued payroll and employee benefits	2,936	3,055
Increase (decrease) in accrued expenses and other current liabilities	18,406	(3,785)
Increase (decrease) in billings in excess of costs and recognized earnings on uncompleted contracts	(21,933)	(7,695)
Increase (decrease) in accrued income taxes	2,060	(2,198)
Increase (decrease) in accrued interest	8,442	502
Increase (decrease) in other liabilities	(720)	(1,371)
Increase (decrease) in pension liability	(8,665)	0
Net cash (used in) provided by operating activities	(33,599)	11,758
Cash flows from investing activities:
Purchase of property, plant and equipment	(16,751)	(4,064)
Sale of property and equipment and other assets	4,994	3,696
Purchase of equity investments	(11,506)	(15,363)
Sale of equity investments	1,026	0
Sale of assets held for sale	1,479	0
Purchase of available-for-sale securities	(10,857)	(3,277)
Sale of available-for-sale securities	5,850	24
Investment in debt securities	(19,347)	(250)
Sale of investments	0	1,111
Cash paid for business acquisitions, net of cash acquired	(568)	(163,510)
Purchase of noncontrolling interest	(239)	(6,978)
Contribution by noncontrolling interest	0	15,500
Receipt of dividends from equity investees	2,448	0
(Increase) decrease in restricted cash	(727)	0
Net cash used in investing activities	(44,198)	(173,111)
Cash flows from financing activities:
Proceeds from long-term obligations	425,527	492,068
Principal payments on long-term obligations	(379,037)	(294,237)
Payment of fees on restructuring of debt	0	(837)
Payment of deferred financing costs	(1,137)	0
Proceeds from sale of common stock, net	0	6,000
Proceeds from sale of preferred stock, net	14,033	39,765
Proceeds from the exercise of warrants and stock options	0	24,344
Payment of dividends	(3,855)	(750)
Taxes paid in lieu of shares issued for share-based compensation	0	(41)
Net cash provided by financing activities	55,531	266,312
Effects of exchange rate changes on cash and cash equivalents	(4,646)	(2,217)
Net change in cash and cash equivalents	(26,912)	102,742
Cash and cash equivalents, beginning of period	107,978	8,997
Cash and cash equivalents, end of period	81,066	111,739
Supplemental cash flow information:
Cash paid for interest	21,445	2,388
Cash paid for taxes	1,701	7,761
Preferred stock accreting dividends and accretion	151	419
Non-cash investing and financing activities:
Purchases of property, plant and equipment under financing arrangements	1,808	0
Property, plant and equipment included in accounts payable	1,521	0
Conversion of preferred stock to common stock	$ 1,000	$ 0

ORGANIZATION AND BUSINESS

ORGANIZATION AND BUSINESS	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
ORGANIZATION AND BUSINESS	ORGANIZATION AND BUSINESS HC2 Holdings, Inc. (“HC2” and, together with its subsidiaries, the “Company”, “we” and “our”) is a diversified holding company which seeks to acquire and grow attractive businesses that we believe can generate long-term sustainable free cash flow and attractive returns. While the Company generally intends to acquire controlling equity interests in its operating subsidiaries, the Company may invest to a limited extent in a variety of debt instruments or noncontrolling equity interest positions. The Company’s shares of common stock trade on the NYSE MKT LLC under the symbol “HCHC”. The Company currently has six reportable segments based on management’s organization of the enterprise—Manufacturing, Marine Services, Utilities, Telecommunications, Life Sciences and Other, which includes operations that do not meet the separately reportable segment thresholds. Our Manufacturing segment includes Schuff International, Inc. (“Schuff”) and its wholly-owned subsidiaries, which primarily operate as integrated fabricators and erectors of structural steel and heavy steel plates with headquarters in Phoenix, Arizona. Schuff has operations in Arizona, Georgia, Texas, Kansas and California, with its construction projects primarily located in the aforementioned states. In addition, Schuff has construction projects in select international markets, primarily Panama through a Panamanian joint venture with Empresas Hopsa, S.A. that provides steel fabrication services. Our Marine Services segment includes Global Marine Systems Limited (“GMSL”). GMSL is a leading provider of engineering and underwater services on submarine cables. In conjunction with our acquisition of GMSL, approximately 3% of the Company’s interest in GMSL was purchased by a group of individuals, leaving the Company’s controlling interest at approximately 97% . Our Utilities segment includes American Natural Gas (“ANG”), which is a premier distributor of natural gas motor fuel headquartered in the Northeast that designs, builds, owns, acquires, operates and maintains compressed natural gas fueling stations for transportation vehicles. In our Telecommunications segment, we operate a telecommunications business including a network of direct routes and provide premium voice communication services for national telecom operators, mobile operators, wholesale carriers, prepaid operators, Voice over Internet Protocol service operators and Internet service providers from our International Carrier Services (“ICS”) business unit. In our Life Sciences segment, we operate Pansend Life Sciences, LLC (“Pansend”, f/k/a Pansend, LLC), which has a 77% interest in Genovel Orthopedics, Inc., which seeks to develop products to treat early osteoarthritis of the knee, and a 61% interest in R2 Dermatology (f/k/a GemDerm Aesthetics, Inc.), which develops skin lightening technology. Additionally, in August 2015, the Company purchased 180,415 shares of MediBeacon, Inc., Preferred Stock for $2.9 million for a total ownership of approximately 9% . In February 2015, the Company sold 586,095 shares of Novatel Wireless, Inc. (“Novatel”) common stock and a warrant to purchase 293,047 shares of Novatel's common stock for $1.0 million which resulted in a gain of $0.2 million . In March 2015, the Company exercised a warrant to purchase 3,824,600 shares of Novatel's common stock for $8.6 million and also acquired a new warrant to purchase 1,593,583 shares of Novatel's common stock at $5.50 per share. The Company’s ownership increased to approximately 23% of Novatel’s common stock. A basis difference, net of tax for the additional investment in March 2015, of $5.6 million consists of a trade name of $0.6 million (amortized over 15 years ), a technology and customer intangible of $0.8 million (amortized over 7 years ) and goodwill of $4.2 million . In the first quarter of 2015, the Company purchased $3.0 million of convertible debt of DTV America Corporation (“DTV”) in aggregate. The convertible debt earned 10% interest. In addition, the Company acquired share purchase warrants, which are exercisable for 666,667 and 333,333 DTV's common shares until January 20, 2018 and March 6, 2018, respectively, at an exercise price of $2.00 per share. The principal balance and accrued interest of the convertible debt was automatically converted into 2,081,693 shares of common stock on June 30, 2015. In April 2015, the Company purchased a $16.1 million convertible debenture (the "Debenture") of Gaming Nation, Inc. ("Gaming Nation"). The Debenture earns 6% interest in-kind and the principal and interest is convertible at the Company's option into Gaming Nation's common shares at a conversion price of $2.25 . On June 9, 2015, the Debenture became convertible into 8,888,889 of Gaming Nation's common shares until June 9, 2017. In addition, the Company acquired a share purchase warrant, which is exercisable for 28,126,068 of Gaming Nation's common shares until April 6, 2020 at varying exercise prices, commencing at $5.00 per share for the first 2 years . For the quarter ended September 30, 2015, the Company recorded a foreign currency translation loss of $1.2 million and unrealized loss on fair value of the Debenture of $2.6 million within other comprehensive income.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation - The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and Securities and Exchange Commission (“SEC”) regulations. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such principles and regulations. In the opinion of management, the financial statements reflect all adjustments (all of which are of a normal and recurring nature), which are necessary to present fairly the financial position, results of operations, cash flows and comprehensive income (loss) for the interim periods. The results for the Company’s three and nine months ended September 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015 . The financial statements should be read in conjunction with the Company’s audited consolidated financial statements included in the Company’s most recently filed Annual Report on Form 10-K. Principles of Consolidation - The condensed consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries and all other subsidiaries over which the Company exerts control. All intercompany profits, transactions and balances have been eliminated in consolidation. As of September 30, 2015 , the Company has a 97% interest in GMSL, a 91% interest in Schuff, a 53% interest in ANG and a 100% interest in DMi, Inc. Through its subsidiary, Pansend, the Company has a 77% interest in Genovel Orthopedics, Inc. and a 61% interest in R2 Dermatology. The results of each of these entities are consolidated with the Company’s results from and after their respective acquisition dates based on guidance from the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) No. 810, “Consolidation” (“ASC 810”). The remaining interests not owned by the Company are presented as a noncontrolling interest component of total equity. Schuff uses a 4-4-5 week quarterly cycle, which for the third quarter of 2015 ended on September 27, 2015. Reclassification - Certain previous year amounts have been reclassified to conform with current year presentations related to the reporting of new balance sheet line items. Newly Adopted Accounting Principles - In April 2014, an update was issued to the Presentation of Financial Statements Topic No. 205 and Property, Plant and Equipment Topic No. 360, Accounting Standards Update (“ASU”) 2014-8, “Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity”, which changes the criteria for reporting discontinued operations. The ASU revises the definition of a discontinued operation and expands the disclosure requirements. Entities should not apply the amendments to a component of an entity that is classified as held for sale before the effective date even if it is disposed of after the effective date. That is, the ASU must be adopted prospectively. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been previously reported in the financial statements. On January 1, 2015, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. New Accounting Pronouncements - In September 2015, the FASB issued ASU 2015-16, “Business Combination Topic No. 805: Simplifying the Accounting for Measurement - Period Adjustments”, which requires adjustments to provisional amounts that are identified during the measurement period to be recognized in the reporting period in which the adjustment amounts are determined. This includes any effect on earnings of changes in depreciation, amortization, or other income effects as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In August 2015, the FASB issued ASU 2015-15, “Interest - Imputation of Interest Subtopic No. 835-30: Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements”, which codifies an SEC staff announcement that entities are permitted to defer and present debt issuance costs related to line-of-credit arrangements as assets. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In August 2015, the FASB issued ASU 2015-14, “Revenue from Contracts with Customers Topic No. 606: Deferral of the Effective Date”, which defers the effective date of the new revenue recognition standard by one year. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2018. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In July 2015, the FASB issued ASU 2015-11, “Inventory Topic No. 330: Simplifying the Measurement of Inventory”, which requires inventory within the scope of the ASU to be measured using the lower of cost and net realizable value. Inventory excluded from the scope of the ASU will continue to be measured at the lower of cost or market. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2017. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In May 2015, the FASB issued ASU 2015-8, “Business Combinations Topic No. 805: Pushdown Accounting-Amendments to SEC Paragraphs Pursuant to Staff Accounting Bulletin No. 115 (SEC Update)”, which rescinds certain SEC guidance in order to confirm with ASU 2014-17, “Pushdown Accounting” (“ASU 2014-17”). ASU 2014-17 was issued in November 2014 and provides a reporting entity that is a business or nonprofit activity (an “acquiree”) the option to apply pushdown accounting to its separate financial statements when an acquirer obtains control of the acquiree. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In April 2015, the FASB issued ASU 2015-3, “Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs”, which requires that debt issuance costs be reported in the balance sheet as a direct deduction from the face amount of the related liability, consistent with the presentation of debt discounts. Prior to the amendments, debt issuance costs were presented as a deferred charge (i.e., an asset) on the balance sheet. This ASU provides examples illustrating the balance sheet presentation of notes net of their related discounts and debt issuance costs. Further, the amendments require the amortization of debt issuance costs to be reported as interest expense. Similarly, debt issuance costs and any discount or premium are considered in the aggregate when determining the effective interest rate on the debt. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In February 2015, the FASB issued ASU 2015-2, “Amendments to the Consolidation Analysis”, which amends the consolidation requirements in ASC 810 and significantly changes the consolidation analysis required under U.S. GAAP relating to whether or not to consolidate certain legal entities. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In January 2015, the FASB issued ASU 2015-1, “Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items”, which eliminates the concept from U.S. GAAP the concept of an extraordinary item. Under the ASU, an entity will no longer (1) segregate an extraordinary item from the results of ordinary operations; (2) separately present an extraordinary item on its income statement, net of tax, after income from continuing operations; or (3) disclose income taxes and earnings-per-share data applicable to an extraordinary item. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change.

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS	9 Months Ended
	Sep. 30, 2015
Business Combinations [Abstract]
BUSINESS COMBINATIONS	BUSINESS COMBINATIONS The Company’s acquisitions were accounted for using the acquisition method of accounting which requires, among other things, that assets acquired and liabilities assumed be recognized at their estimated fair values as of the acquisition date. Estimates of fair value included in the condensed consolidated financial statements, in conformity with ASC No. 820, “Fair Value Measurements and Disclosures” (“ASC 820”), represent the Company’s best estimates and valuations developed with the assistance of independent appraisers and, where such valuations have not yet been completed or are not available, industry data and trends and by reference to relevant market rates and transactions. The following estimates and assumptions are inherently subject to significant uncertainties and contingencies beyond the control of the Company. Accordingly, the Company cannot provide assurance that the estimates, assumptions, and values reflected in the valuations will be realized, and actual results could vary materially. Any changes to the initial estimates of the fair value of the assets and liabilities will be recorded as adjustments to those assets and liabilities and residual amounts will be allocated to goodwill. In accordance with ASC 805 “Business Combinations”, if additional information is obtained about these assets and liabilities within the measurement period (not to exceed one year from the date of acquisition), including finalization of asset appraisals, the Company will refine its estimates of fair value to allocate the purchase price more accurately. Schuff On May 29, 2014, the Company completed the acquisition of 2.5 million shares of common stock of Schuff and negotiated an agreement to purchase an additional 198,411 shares, representing an approximately 65% interest in Schuff. Schuff repurchased a portion of its outstanding common stock in June 2014, which had the effect of increasing the Company’s ownership interest to 70% . During the fourth quarter of 2014 and the nine months ended September 30, 2015, the final results of a tender offer for all outstanding shares of Schuff were announced and various open-market purchases were made, which resulted in our acquisition of an additional 816,414 shares and an increase in our ownership interest to 91% . The Company acquired Schuff to expand the business that it engages in and saw Schuff as an opportunity to enter the steel fabrication and erection market. The table below summarizes the fair value of the Schuff assets acquired and liabilities assumed as of the acquisition date. The Company purchased 2.5 million shares of common stock of Schuff for $78.8 million . The purchase price of Schuff was valued at $31.50 per share which represented both the cash paid by the Company for its 60% interest, and the fair value of the noncontrolling interest of 40% . The purchase price allocation is as follows (in thousands): Cash and cash equivalents $ (627 ) Investments 1,714 Accounts receivable 130,622 Costs and recognized earnings in excess of billings on uncompleted contracts 27,126 Prepaid expenses and other current assets 3,079 Inventories 14,487 Property and equipment, net 85,662 Goodwill 24,490 Trade names 4,478 Other assets 2,947 Total assets acquired 293,978 Accounts payable 37,621 Accrued payroll and employee benefits 11,668 Accrued expenses and other current liabilities 12,532 Billings in excess of costs and recognized earnings on uncompleted contracts 65,985 Accrued income taxes 1,202 Accrued interest 76 Current portion of long-term debt 15,460 Long-term debt 4,375 Deferred tax liability 7,693 Other liabilities 604 Noncontrolling interest 4,365 Total liabilities assumed 161,581 Enterprise value 132,397 Less fair value of noncontrolling interest 53,647 Purchase price attributable to controlling interest $ 78,750 The acquisition of Schuff resulted in goodwill of approximately $24.5 million . Goodwill was the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Goodwill was recognized as a new stand-alone reporting unit. Goodwill is not amortized and is not deductible for tax purposes. Amortizable Intangible Assets The Schuff trade name was valued using a relief from royalty methodology. An estimated 60% of Schuff's revenue is generated from Schuff’s relationship with general contractors. Thus, a value of the Schuff trade name was calculated based on the present value of Schuff’s projected revenues for 15 years multiplied by 60% . The Schuff trade name was valued at $4.5 million and is being amortized over a 15 year life. ASC 810 requires that transactions that result in an increase in ownership of a subsidiary be accounted for as equity transactions. The carrying amount of the noncontrolling interest is adjusted to reflect the controlling interest’s decreased ownership interest in the subsidiary’s net assets and any difference between the consideration paid by the parent to a noncontrolling interest holder (or contributed by the parent to the net assets of the subsidiary) and the adjustment to the carrying amount of the noncontrolling interest in the subsidiary is recognized directly in equity attributable to the controlling interest. Due to the increase of the Company’s ownership of Schuff to 91% from the May 2014 acquisition date through December 31, 2014 , the Company recorded an adjustment to Schuff’s noncontrolling interest of $3.4 million and recorded as the excess book value over the fair value of purchased noncontrolling interest in the Company’s condensed consolidated statement of stockholders’ equity. In the nine months ended September 30, 2015 , the Company acquired an additional 7,371 shares of Schuff that resulted in less than $0.1 million of excess book value over fair value of purchased noncontrolling interest in the Company’s condensed consolidated statement of stockholders’ equity. The ownership interest of 91% did not change. ANG On August 1, 2014, the Company paid $15.5 million to acquire 15,500 shares of Series A Convertible Preferred Stock of ANG (the “ANG Preferred Stock”), representing an approximately 51% interest in ANG. The ANG Preferred Stock was convertible into 1,033,333 shares of common stock and also has voting rights. The noncontrolling interest represents 1,000,000 shares of common stock; thereby the Company has a controlling interest. The Company acquired ANG for its strong growth potential which is in line with the Company’s strategy to find businesses that it can operate to generate high returns and significant cash flow. The table below summarizes the fair values of the ANG assets acquired and liabilities assumed as of the acquisition date. The purchase price of ANG was valued at $17.7 million , which represented both the cash paid by the Company for its 51% interest ( $15.5 million ), and the fair value of the noncontrolling interest of 49% , which we determined to be $2.2 million . The purchase price allocation is as follows (in thousands): Cash and cash equivalents $ 15,704 Accounts receivable 306 Prepaid expenses and other current assets 31 Inventories 27 Property and equipment, net 1,921 Customer contracts 2,700 Trade names 6,300 Other assets 2 Total assets acquired 26,991 Accounts payable 49 Accrued payroll and employee benefits 5 Accrued expenses and other current liabilities 26 Billings in excess of costs and recognized earnings on uncompleted contracts 114 Current portion of long-term debt 34 Long-term debt 870 Deferred tax liability 3,349 Total liabilities assumed 4,447 Fair value of net assets acquired 22,544 Less purchase price 15,500 Less fair value of noncontrolling interest 2,189 Excess of fair value of net assets over purchase price $ 4,855 The acquisition of ANG resulted in an excess of the fair value of the net assets acquired over the purchase price of $4.9 million . The Company does not believe that the circumstances surrounding the transaction give rise to a bargain purchase. The existing shareholders of ANG continue to manage the day-to-day operations and own the noncontrolling interest. Accordingly, due to the related party nature of the transaction, management has recorded the excess of the fair value of the assets acquired over the purchase price in additional paid-in capital. Amortizable Intangible Assets The ANG trade name was valued using a relief from royalty methodology. The value of the ANG trade name was calculated based on ANG’s projected revenues for 10 years . An estimated royalty of 4% (looking at other market participants) was calculated net of tax based upon those revenues and present valued over 10 years . The ANG trade name was valued at $6.3 million and is being amortized over a 10 year life. Customer contracts were valued using a multi-period excess earnings methodology. The value of the customer contracts ANG holds for its owned and operated facilities was calculated based on the present value of ANG’s net income from those contracts for 10 years . The customer contracts were valued at $2.7 million and is being amortized over a 10 year life. GMSL On September 22, 2014, the Company completed the acquisition of Bridgehouse Marine Limited and its subsidiary, GMSL. The purchase price reflects an enterprise value of approximately $260 million , including assumed indebtedness of approximately $130 million , leaving a net enterprise value of approximately $130 million . GMSL is a leading provider of engineering and underwater services on submarine cables. The Company acquired GMSL for its attractive valuation and strong cash position. The table below summarizes the fair values of the GMSL assets acquired and liabilities assumed as of the acquisition date. The net enterprise value of GMSL was valued at $130 million , which represented both the cash paid by the Company for its 97% interest, and the fair value of the noncontrolling interest of 3% . The purchase price allocation is as follows (in thousands): Cash and cash equivalents $ 62,555 Accounts receivable 26,183 Prepaid expenses and other current assets 22,111 Inventories 7,395 Restricted cash 4,682 Property and equipment, net 152,022 Customer contracts 8,121 Trade name 1,137 Developed technology 1,299 Goodwill 493 Investments 28,876 Other assets 7,482 Total assets acquired 322,356 Accounts payable 8,965 Accrued expenses and other current liabilities 46,992 Accrued income taxes 1,251 Current portion of long-term debt 8,140 Long-term debt 78,356 Pension liability 45,923 Deferred tax liability 1,163 Other liabilities 1,178 Total liabilities assumed 191,968 Enterprise value 130,388 Less fair value of noncontrolling interest 3,803 Purchase price attributable to controlling interest $ 126,585 The acquisition of GMSL resulted in goodwill of approximately $0.5 million . Goodwill was the excess of the consideration transferred over the net assets recognized and represents the future economic benefits arising from other assets acquired that could not be individually identified and separately recognized. Goodwill was recognized as a new stand-alone reporting unit. Goodwill is not amortized and is not deductible for tax purposes. After the June 30, 2015 financial statements were issued, we updated certain balance sheet items under the purchase price allocation. The carrying value of the property and equipment, net was reduced by $5.0 million , the carrying value of the investments was increased by $4.6 million and a deferred tax liability of $0.1 million was established on the developed technology intangible asset. These increases and decreases resulted in the creation of $0.5 million of goodwill. Amortizable Intangible Assets • Customer contracts were valued using a multi-period excess earnings methodology. Projected revenues and margins were used to forecast the earnings for each contract taking into consideration probabilities of contract renewals. Three customer contracts were valued at £5.0 million ( $8.1 million using the exchange rate in effect at the time of acquisition) and are being amortized over a 15 year life. • The GMSL trade name was valued using a relief from royalty methodology. Given an element of uncertainty surrounding the GMSL trade name, and consistent with likely market participant use, a probability of continuing use was applied to the projected revenue stream. The GMSL trade name was valued at £0.7 million ( $1.1 million using the exchange rate in effect at the time of acquisition) and is being amortized over a 3 year life. • The developed technology was valued using a relief from royalty methodology. The fair value was estimated based on the revenue attributable to developed technology and the hypothetical royalties avoided by owning the technology as well as the current royalties earned, the revenue stream was adjusted for technology obsolescence, as the technology will decay over time and be replaced by new technologies. The developed technology was preliminarily valued £0.8 million ( $1.3 million using the exchange rate in effect at the time of acquisition) and is being amortized over a 4 year life. GMSL's Joint Ventures (accounted for under the Equity Method) • S. B. Submarine Systems Co., Ltd. (“SBSS”) – This investment was valued using an income approach (income capitalization method) and market approach (guideline public company method) and weighted each 50-50 to arrive at an operating value. From there, debt was added and a 35% ‘discount for the lack of marketability’ was applied to arrive at a fair value. That fair value was multiplied by GMSL’s ownership percentage to arrive a fair value applicable to GMSL. The income approach used year end 2014 results as acquisition-date financials as projections were not available. The multiples applied under the market approach were based on EBITDA and revenue multiples for entities operating in the same industry. The valuation resulted in a fair value of £9.7 million ( $15.8 million using the exchange rate in effect at the time of acquisition). • Huawei Marine Networks Co., Ltd . – This investment was valued using a market approach (guideline public company method) and cost approach (book value of equity) and weighted each 50-50 to arrive at an operating value. There was no debt but a 30% ‘discount for the lack of marketability’ was applied to arrive at a fair value. That fair value was multiplied by GMSL’s ownership percentage to arrive a fair value applicable to GMSL. The multiples applied under the market approach were based on EBITDA and revenue multiples for entities operating in the same industry. The valuation resulted in a fair value of £4.3 million ( $7.0 million using the exchange rate in effect at the time of acquisition). • International Cableship Pte., Ltd. – This investment was valued using a cost approach (book value of equity) to arrive at an operating value. There was no debt but a 20% ‘discount for the lack of marketability’ was applied to arrive at a fair value. That fair value was multiplied by GMSL’s ownership percentage to arrive a fair value applicable to GMSL. The valuation resulted in a fair value of £2.8 million ( $4.5 million using the exchange rate in effect at the time of acquisition). • Sembawang Cable Depot Pte., Ltd. – This investment was valued using an income approach (income capitalization method) and market approach (guideline public company method) and weighted each 50-50 to arrive at an operating value. There was no debt, but a 20% ‘discount for the lack of marketability’ was applied to arrive at a fair value. That fair value was multiplied by GMSL’s ownership percentage to arrive a fair value applicable to GMSL. The income approach used year end 2014 results as acquisition-date financials as projections were not available. The multiples applied under the market approach were based on EBITDA and revenue multiples for entities operating in the same industry. The valuation resulted in a fair value of £0.7 million . ( $1.1 million using the exchange rate in effect at the time of acquisition). • Other investments were valued at £0.3 million ( $0.5 million using the exchange rate in effect at the time of acquisition). The fair value was determined to approximate carrying value. • Basis Differences – The total fair values of the named investments above was £17.5 million , while the carrying value (based on GMSL’s ownership percentage and using the balance sheets as of December 31, 2014 ) was £25.2 million . This resulted in a basis difference of £7.7 million ( $12.5 million using the exchange rate in effect at the time of acquisition), of which the majority of was attributable to SBSS. This basis difference will be accreted up over a 9 year period which will result in the increase to the investment in SBSS. Pro Forma Adjusted Summary The results of operations for Schuff, ANG, and GMSL have been included in the consolidated financial statements subsequent to their acquisition dates. The following schedule presents unaudited consolidated pro forma results of operations data as if the acquisitions of Schuff, ANG and GMSL had occurred on January 1, 2014. This information neither purports to be indicative of the actual results that would have occurred if the acquisitions had actually been completed on the date indicated, nor is it necessarily indicative of the future operating results or the financial position of the combined company (in thousands, except per share amounts): Three Months Ended Nine Months Ended Net revenue $ 223,927 $ 630,035 Net income (loss) from continuing operations (11,009 ) 1,636 Net income (loss) from discontinued operations (3,067 ) (3,115 ) Gain (loss) from sale of discontinued operations 663 (121 ) Net income (loss) attributable to HC2 $ (13,413 ) $ (1,600 ) Per share amounts: Income (loss) from continuing operations $ (0.47 ) $ 0.09 Income (loss) from discontinued operations (0.13 ) (0.17 ) Gain (loss) from sale of discontinued operations 0.03 (0.01 ) Net income (loss) attributable to HC2 $ (0.57 ) $ (0.09 ) All expenditures incurred in connection with the acquisitions were expensed and are included in selling, general and administrative expenses. Transaction costs incurred in connection with the Schuff acquisition were $0.3 million during the nine months ended September 30, 3014. Transaction costs incurred in connection with the GMSL acquisition were $4.3 million during the nine months ended September 30, 2014. The Company recorded net revenue and net income (loss) as follows (in thousands): Three Months Ended September 30, 2014 Nine Months Ended September 30, 2014 Net Revenue Net Income (Loss) Net Revenue Net Income (Loss) Schuff $ 137,706 $ 3,491 $ 192,182 $ 6,065 ANG 460 (386 ) 460 (386 )

ACCOUNTS RECEIVABLE

ACCOUNTS RECEIVABLE	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
ACCOUNTS RECEIVABLE	ACCOUNTS RECEIVABLE Accounts receivable consist of the following (in thousands): September 30, 2015 December 31, 2014 Contract receivables: Contracts in progress $ 116,353 $ 105,071 Unbilled retentions 29,292 32,850 Trade receivables 43,235 16,202 Other receivables 170 195 Allowance for doubtful accounts (1,576 ) (2,760 ) $ 187,474 $ 151,558

CONTRACTS IN PROGRESS

CONTRACTS IN PROGRESS	9 Months Ended
	Sep. 30, 2015
Contractors [Abstract]
CONTRACTS IN PROGRESS	CONTRACTS IN PROGRESS Costs and recognized earnings in excess of billings on uncompleted contracts and billings in excess of costs and recognized earnings on uncompleted contracts consist of the following (in thousands): September 30, 2015 December 31, 2014 Costs incurred on contracts in progress $ 636,345 $ 531,129 Estimated earnings 96,953 73,540 733,298 604,669 Less progress billings 716,077 618,530 $ 17,221 $ (13,861 ) The above is included in the accompanying condensed consolidated balance sheet under the following captions: Costs and recognized earnings in excess of billings on uncompleted contracts 37,266 28,098 Billings in excess of costs and recognized earnings on uncompleted contracts 20,045 41,959 $ 17,221 $ (13,861 )

INVENTORIES

INVENTORIES	9 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consist of the following (in thousands): September 30, 2015 December 31, 2014 Raw materials $ 12,294 $ 12,956 Work in process 1,697 1,779 Finished goods 417 240 $ 14,408 $ 14,975

INVESTMENTS

INVESTMENTS	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
INVESTMENTS	INVESTMENTS As of September 30, 2015 and December 31, 2014 , the fair value of the available for sale securities recorded within short-term investments was $2.6 million and $4.9 million , respectively. As of September 30, 2015 , our cost basis in available for sale securities recorded within short-term investments was $6.0 million , on which the Company had unrealized losses on such securities of $3.4 million recorded in accumulated other comprehensive loss. As of December 31, 2014 , our cost basis in available for sale securities recorded within short-term investments was $2.4 million , on which the Company had unrealized gains on such securities of $2.5 million recorded in accumulated other comprehensive loss. The Company's long-term investments are summarized as follows (in thousands): September 30, 2015 Cost Unrealized Gains Unrealized Losses Carrying Value Common Equity Novatel Wireless, Inc. $ 11,430 $ — $ — $ 11,430 DTV America Corporation 2,828 1,856 — 4,684 Total Common Equity 14,258 1,856 — 16,114 Preferred Equity NerVve Technologies, Inc. 4,619 — — 4,619 Benevir Biopharm, Inc. 1,429 — — 1,429 MediBeacon, Inc. 2,842 — — 2,842 Total Preferred Equity 8,890 — — 8,890 GMSL Joint Ventures S. B. Submarine Systems Co., Ltd. 17,680 — — 17,680 International Cableship Pte., Ltd. 1,181 — — 1,181 Sembawang Cable Depot Pte., Ltd. 1,011 — — 1,011 Huawei Marine Networks Co., Ltd 14,351 — — 14,351 Visser Smit Global Marine Partnership 430 — — 430 Total GMSL Joint Ventures 34,653 — — 34,653 Convertible Debt Gaming Nation, Inc. 10,060 — (3,398 ) 6,662 mParticle 500 — — 500 Total Convertible Debt 10,560 — (3,398 ) 7,162 Warrants Novatel Wireless, Inc. 3,097 — — 3,097 Gaming Nation, Inc 6,036 — (443 ) 5,593 DTV America Corporation 295 317 — 612 Total Warrants 9,428 317 (443 ) 9,302 Other Equity Kaneland, LLC 1,033 — — 1,033 Total long-term investments $ 78,822 $ 2,173 $ (3,841 ) $ 77,154 December 31, 2014 Cost Unrealized Gains Unrealized Losses Carrying Value Common Equity Novatel Wireless, Inc. 10,462 — — 10,462 Preferred Equity NerVve Technologies, Inc. 5,538 — — 5,538 Benevir Biopharm, Inc. 1,915 — — 1,915 Total Preferred Equity 7,453 — — 7,453 GMSL Joint Ventures Global Cable Technology Ltd. 50 — — 50 S. B. Submarine Systems Co., Ltd. 12,882 — — 12,882 International Cableship Pte., Ltd. 2,111 — — 2,111 Sembawang Cable Depot Pte., Ltd. 808 — — 808 Huawei Marine Networks Co., Ltd 10,087 — — 10,087 Visser Smit Global Marine Partnership 464 — — 464 Total GMSL Joint Ventures 26,402 — — 26,402 Convertible Debt mParticle 250 — — 250 Warrants Novatel Wireless, Inc. 2,956 — — 2,956 Other Equity Kaneland, LLC 1,151 — — 1,151 Total long-term investments $ 48,674 $ — $ — $ 48,674 Summarized income statement information for our significant equity method investments for the nine months ended August 31, 2015 (which we record on a one month lag) is as follows (in thousands): Net Revenue $159,339 Gross Profit 40,736 Loss from continuing operations (25,749 ) Net loss (31,192 )

GOODWILL AND OTHER INTANGIBLE A

GOODWILL AND OTHER INTANGIBLE ASSETS	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS	GOODWILL AND OTHER INTANGIBLE ASSETS Goodwill The changes in the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2015 are as follows (in thousands): Schuff GMSL ICS Other Total Balance as of December 31, 2014 $ 24,612 $ — $ 3,378 $ — $ 27,990 Effect of change in foreign currency exchange rates — — — — — Acquisition of business (122 ) 1,016 — 1,781 2,675 Balance as of September 30, 2015 $ 24,490 $ 1,016 $ 3,378 $ 1,781 $ 30,665 Amortizable Intangible Assets Intangible assets subject to amortization consisted of the following (in thousands): Schuff GMSL ANG Pansend Other Corporate Total Trade names Balance as of December 31, 2014 $ 4,304 $ 997 $ 6,037 $ — $ — $ — $ 11,338 Effect of change in foreign currency exchange rates — (26 ) — — — — (26 ) Amortization (224 ) (265 ) (472 ) — — — (961 ) Acquisition of business — — — — — — — Reclassification — — — — — — — Balance as of September 30, 2015 $ 4,080 $ 706 $ 5,565 $ — $ — $ — $ 10,351 Customer relationships Balance as of December 31, 2014 $ — $ 7,333 $ 4,881 $ — $ — $ — $ 12,214 Effect of change in foreign currency exchange rates — (155 ) — — — — (155 ) Amortization — (380 ) (325 ) — — — (705 ) Acquisition of business — — — — — — — Reclassification — — — — — — — Balance as of September 30, 2015 $ — $ 6,798 $ 4,556 $ — $ — $ — $ 11,354 Developed technology Balance as of December 31, 2014 $ — $ 1,456 $ — $ — $ — $ — $ 1,456 Effect of change in foreign currency exchange rates — (37 ) — — — — (37 ) Amortization — (227 ) — — (638 ) — (865 ) Acquisition of business — — — — — — — Reclassification — — — — 4,195 — 4,195 Balance as of September 30, 2015 $ — $ 1,192 $ — $ — $ 3,557 $ — $ 4,749 Other Balance as of December 31, 2014 $ — $ — $ — $ 114 $ 6,000 $ 22 $ 6,136 Effect of change in foreign currency exchange rates — — — — — — — Amortization — — — (1 ) — — (1 ) Acquisition of business — — — — — — — Asset acquisition — — 20 65 — — 85 Reclassification — — — — (6,000 ) — (6,000 ) Balance as of September 30, 2015 $ — $ — $ 20 $ 178 $ — $ 22 $ 220 Total amortizable intangible assets Balance as of December 31, 2014 $ 4,304 $ 9,786 $ 10,918 $ 114 $ 6,000 $ 22 $ 31,144 Effect of change in foreign currency exchange rates — (218 ) — — — — (218 ) Amortization (224 ) (872 ) (797 ) (1 ) (638 ) — (2,532 ) Acquisition of business — — — — — — — Asset acquisition — — 20 65 — — 85 Reclassification — — — — (1,805 ) — (1,805 ) Balance as of September 30, 2015 $ 4,080 $ 8,696 $ 10,141 $ 178 $ 3,557 $ 22 $ 26,674

LONG-TERM OBLIGATIONS

LONG-TERM OBLIGATIONS	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
LONG-TERM OBLIGATIONS	LONG-TERM OBLIGATIONS Long-term debt consists of the following (in thousands): September 30, 2015 December 31, 2014 Senior Secured Notes collateralized by certain of the Company's and its subsidiaries' assets, with interest payable semi-annually based on a fixed annual interest rate of 11% with principal due in 2019 $ 305,000 $ 250,000 Note payable collateralized by GMSL's assets, with interest payable monthly at LIBOR plus 3.65% and principal payable monthly, maturing in 2019 13,432 16,732 Note payable collateralized by Schuff's real estate, with interest payable monthly at LIBOR plus 4% and principal payable monthly, maturing in 2019 4,167 4,635 Note payable collateralized by Schuff's equipment, with interest payable monthly at LIBOR plus 4% and principal payable monthly, maturing in 2019 11,029 8,333 Line of credit collateralized by Schuff's HOPSA assets, with interest payable monthly at 5.25% plus 1% of Special Interest Compensation Fund 2,000 — Note payable collateralized by ANG's assets, with interest payable monthly at 5.5% and principal payable monthly, maturing in 2018 698 810 Obligations under capital leases 53,389 65,176 Other 22 30 Credit and security agreement for Schuff to advance up to a maximum amount of $50.0 million — — Subtotal 389,737 345,716 Original issue discount on Senior Secured Notes (1,879 ) (2,345 ) Subtotal 387,858 343,371 Less: Current portion of long-term obligations 13,454 10,444 Total long-term obligations $ 374,404 $ 332,927 Aggregate debt maturities are as follows (in thousands): 2015 $ 4,881 2016 11,684 2017 11,953 2018 14,880 2019 317,910 Thereafter 28,429 $ 389,737 Aggregate maturities for the capital leases are as follows (in thousands): 2015 $ 1,681 2016 6,706 2017 6,697 2018 10,208 2019 10,207 Thereafter 30,938 Total minimum principal & interest payments 66,437 Less: Amount representing interest (13,048 ) Total capital lease obligations $ 53,389 The interest rates on the capital leases range from approximately 4% to 10% . 11% Senior Secured Notes due 2019 On November 20, 2014, the Company issued $250.0 million in aggregate principal amount of 11% Senior Secured Notes due 2019 (the “Existing Notes”). The Existing Notes were issued at 99.05% of par, which resulted in a discount of $2.4 million . The net proceeds from the issuance of the Existing Notes were used to pay off a senior secured credit facility which provided for a twelve month, floating interest rate term loan of $214 million and a delayed draw term loan of $36 million (the “September Credit Facility”) that was entered into in connection with the GMSL acquisition. On March 26, 2015, the Company issued an additional $50.0 million in aggregate principal amount of 11% Senior Secured Notes due 2019 (the “New Notes” and together with the Existing Notes, the “ 11% Notes). The New Notes were issued at 100.5% of par, plus accrued interest from November 20, 2014, which resulted in a premium of $0.3 million . On August 5, 2015, the Company issued an additional $5.0 million aggregate principal amount of its 11% Senior Secured Notes due 2019 (the “Additional 11% Notes” and together with the New Notes and the Existing Notes, the “ 11% Notes”). The purchasers paid for the Additional 11% Notes by granting a claims release (see Note 13 "Equity" for additional information). The 11% Notes were issued under an indenture dated November 20, 2014, by and among HC2, the guarantors party thereto and U.S. Bank National Association, a national banking association (“U.S. Bank”), as trustee (the “ 11% Notes Indenture”). Maturity and Interest . The 11% Notes mature on December 1, 2019 . The 11% Notes accrue interest at a rate of 11% per year. Interest on the 11% Notes is paid semi-annually on December 1st and June 1st of each year. Ranking . The 11% Notes and the guarantees thereof will be HC2’s and certain of its direct and indirect domestic subsidiaries’ (the “Subsidiary Guarantors”) general senior secured obligations. The 11% Notes and the guarantees thereof will rank: (i) senior in right of payment to all of HC2’s and the Subsidiary Guarantors’ future subordinated debt; (ii) equal in right of payment with all of HC2’s and the Subsidiary Guarantors’ existing and future senior debt and effectively senior to all of its unsecured debt to the extent of the value of the collateral; and (iii) effectively subordinated to all liabilities of its non-guarantor subsidiaries. Collateral. The 11% Notes and the guarantees thereof will be collateralized on a first-priority basis by substantially all of HC2’s assets and the assets of the Subsidiary Guarantors (except for certain “Excluded Assets,” and subject to certain “Permitted Liens,” each as defined in the 11% Notes Indenture). The 11% Notes Indenture permits the Company, under specified circumstances, to incur additional debt in the future that could equally and ratably share in the collateral. The amount of such debt is limited by the covenants contained in the 11% Notes Indenture. Certain Covenants . The 11% Notes Indenture contains covenants limiting, among other things, the ability of HC2, and, in certain cases, HC2’s subsidiaries, to incur additional indebtedness; create liens; engage in sale-leaseback transactions; pay dividends or make distributions in respect of capital stock; make certain restricted payments; sell assets; engage in transactions with affiliates; or consolidate or merge with, or sell substantially all of its assets to, another person. These covenants are subject to a number of important exceptions and qualifications. HC2 is also required to maintain compliance with certain financial tests, including minimum liquidity and collateral coverage ratios. As of September 30, 2015 , HC2 was in compliance with these covenants. Redemption Premiums . The Company may redeem the 11% Notes at a redemption price equal to 100.0% of the principal amount of the 11% Notes plus a make-whole premium before December 1, 2016 . The make-whole premium is the greater of (i) 1% of principal amount or (ii) the excess of the present value of redemption price at December 1, 2016 plus all required interest payments through December 1, 2016 over the principal amount. After December 1, 2016, the Company may redeem the 11% Notes at a redemption price equal to 100% of the principal amount plus accrued interest. The Company is required to make an offer to purchase the 11% Notes upon a change of control at a purchase price equal to 101% of the principal amount of the 11% Notes on the date of purchase plus accrued interest. Terminated HC2 Credit Facilities In 2014, the Company entered into (i) a senior secured credit facility providing for an eighteen month, floating interest rate term loan of $80 million (the “May Credit Facility”) to finance a portion of the acquisition of Schuff, (ii) a senior unsecured credit facility consisting of a term loan of $17 million (the “Novatel Acquisition Term Loan”) for the purpose of acquiring an ownership interest in Novatel and (iii) the September Credit Facility to finance a portion of the acquisition of GMSL. The Company used a portion of the proceeds from the September Credit Facility to repay the May Credit Facility and the Novatel Acquisition Term Loan. The Company used the net proceeds from the issuance of the Existing Notes to repay the September Credit Facility. Prior to the payoff of the May Credit Facility, the Company made partial principal payments according to covenants within the agreement that required that portions of escrows received and proceeds from the exercise of warrants be used to pay down the May Credit Facility. In connection with those partial prepayments, the Company wrote off $0.1 million of deferred financing costs and $0.2 million of original issue discount in the second quarter of 2014 to amortization of debt discount. In connection with those partial prepayments, the Company wrote off $0.1 million of deferred financing costs and $1.9 million of original issue discount in the third quarter of 2014 to loss on early extinguishment or restructuring of debt. In connection with the payoff of the remaining balance of the May Credit Facility, the Company incurred $0.9 million of prepayment premiums and wrote off $0.3 million of deferred financing costs and $2.5 million of original issue discount in the third quarter of 2014 to loss on early extinguishment or restructuring of debt. In connection with the payoff of the Novatel Acquisition Term Loan, the Company wrote off $0.4 million of deferred financing costs and $0.8 million of original issue discount in the third quarter of 2014 to loss on early extinguishment or restructuring of debt. In connection with the payoff of the September Credit Facility, the Company wrote off $0.5 million of deferred financing costs and $4.5 million of original issue discount, which is net of a credit for previous paid funding fees of $2.3 million during the fourth quarter of 2014 to loss on early extinguishment or restructuring of debt. Schuff Credit Facilities Schuff has a Credit and Security Agreement (“Schuff Facility”) with Wells Fargo Credit, Inc. (“Wells Fargo”), pursuant to which Wells Fargo agreed to advance up to a maximum amount of $50.0 million to Schuff. On October 21, 2014, Schuff amended the Schuff Facility, pursuant to which Wells Fargo allowed for the issuance of a note payable up to $10.0 million , collateralized by its machinery and equipment (“Real Estate (2) Term Advance (M&E)”) and the issuance of a note payable up to $5.0 million , collateralized by its real estate (“Real Estate (2) Term Advance (Working Capital)”). At September 30, 2015 and December 31, 2014 , Schuff had borrowed $11.0 million and $8.4 million , respectively, under the Real Estate (2) Term Advance (M&E) and Real Estate (2) Term Advance (Working Capital). The Real Estate (2) Term Advance (M&E) and Real Estate (2) Term Advance (Working Capital) have a 5 year amortization period requiring monthly principal payments and a final balloon payment at maturity. The Real Estate (2) Term Advance (M&E) and Real Estate (2) Term Advance (Working Capital) have a floating interest rate of LIBOR plus 4.0% and require monthly interest payments. On May 6, 2014, Schuff amended the Schuff Facility, pursuant to which Wells Fargo extended the maturity date of the Schuff Facility to April 30, 2019 , lowered the interest rate charged in connection with borrowings under the line of credit and allowed for the issuance of a note payable totaling $5.0 million , collateralized by its real estate (“Real Estate Term Advance”). At September 30, 2015 and December 31, 2014 , Schuff had borrowed $4.2 million and $4.6 million , respectively, under the Real Estate Term Advance. The Real Estate Term Advance has a 5 year amortization period requiring monthly principal payments and a final balloon payment at maturity. The Real Estate Term Advance has a floating interest rate of LIBOR plus 4.0% and requires monthly interest payments. The Schuff Facility has a floating interest rate of LIBOR plus 3.0% ( 3.32% at September 30, 2015 ) and requires monthly interest payments. As of September 30, 2015 and December 31, 2014 , Schuff had no amounts outstanding under the Schuff Facility. The Schuff Facility is secured by a first priority, perfected security interest in all of Schuff’s assets, excluding the real estate, and its present and future subsidiaries and a second priority, perfected security interest in all of Schuff’s real estate. The security agreements pursuant to which Schuff’s assets are pledged prohibit any further pledge of such assets without the written consent of the bank. The Schuff Facility contains various restrictive covenants. At September 30, 2015 , the Company was in compliance with these covenants. Schuff Hopsa Engineering, Inc. (“SHE”), a joint venture which Schuff consolidates, has a Line of Credit Agreement (“International LOC”) with Banco General, S.A. (“Banco General”) in Panama pursuant to which Banco General agreed to advance up to a maximum amount of $2.5 million . The line of credit is secured by a first priority, perfected security interest in the SHE’s property and plant. The interest rate is 5.25% plus 1% of the special interest compensation fund (“FECI”). The line of credit contains covenants that, among other things, limit the SHE’s ability to incur additional indebtedness, change its business, merge, consolidate or dissolve and sell, lease, exchange or otherwise dispose of its assets, without prior written notice. There was $3.9 million in outstanding letters of credit issued and $46.1 million available under the Schuff Facility at September 30, 2015 . At September 30, 2015 , Schuff had $2.0 million in borrowings and no outstanding letters of credit issued under its International LOC. There was $0.5 million available under Schuff’s International LOC at September 30, 2015 . GMSL Credit Facility GMSL established a $20.0 million term loan with DVB Bank in January 2014 (the “GMSL Facility”). This GMSL facility has a 4.5 year term and bears interest at the rate of 3.65% plus the USD LIBOR rate. As of September 30, 2015 and December 31, 2014 , $13.4 million and $16.7 million , respectively, remained outstanding under the GMSL Facility. The GMSL Facility contains various restrictive covenants. At September 30, 2015 , GMSL was in compliance with these covenants. ANG Term Loan ANG established a term loan with Signature Financial in October 2013. This term loan has a 5 year term and bears interest at the rate of 5.5% . As of September 30, 2015 and December 31, 2014 , $0.7 million and $0.8 million , respectively, remained outstanding under this term loan. GMSL Capital Leases GMSL is a party to two leases to finance the use of two vessels: the Innovator (such applicable lease, the “Innovator Lease”) and the Cable Retriever (such applicable lease, the “Cable Lease,” and together with the Innovator Lease, the “GMSL Leases”). The Innovator Lease expires in 2018 , subject to the Company’s ability to extend the Innovator Lease for four one year periods through 2022. The principal amount thereunder bears interest at the rate of approximately 10.4% . The Cable Lease expires in 2023 . The principal amount thereunder bears interest at the rate of approximately 4.0% . As of September 30, 2015 and December 31, 2014 , $53.4 million and $65.2 million , respectively, in aggregate principal amount remained outstanding under the GMSL Leases.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Income Tax Benefit (Expense) Income tax was a benefit of $0.6 million and an expense of $4.5 million for the three months ended September 30, 2015 and 2014 , respectively. The tax expense resulted primarily from the projected expense as calculated under ASC 740 without applying a valuation allowance. The September 30, 2014 expense was due primarily to the acquisition of Schuff. Income tax was a benefit $4.0 million and an expense of $6.5 million for the nine months ended September 30, 2015 and 2014 , respectively. The Company used the Annual Effective Tax Rate (“ETR”) approach of ASC 740-270 (formerly FIN 18) to calculate its third quarter 2015 interim tax provision. NOL Limitation As of September 30, 2015 , the Company had an estimated NOL carryforward in the amount of $61.1 million . This amount does not include 2015 activity. In the first quarter of 2014 , substantial acquisitions of the Company's stock were reported by new beneficial owners of 5% or more of the Company’s common stock on Schedule 13D filings made with the SEC. On May 29, 2014, the Company issued 30,000 shares of Series A Convertible Participating Preferred Stock of the Company (the “Series A Preferred Stock”) and 1,500,000 shares of common stock to finance the acquisition of Schuff. During the second quarter the Company completed a Section 382 review. The conclusions of this review indicate that an ownership change had occurred as of May 29, 2014. The Company’s annual Section 382 base limit following the ownership change is estimated to be $2.2 million per year. Unrecognized Tax Benefits The Company follows the provision of ASC No. 740-10, “Income Taxes” which prescribes a comprehensive model for how a company should recognize, measure, present, and disclose in its financial statements uncertain tax positions that the Company has taken or expects to take on a tax return. The Company is subject to challenge from various taxing authorities relative to certain tax planning strategies, including certain intercompany transactions as well as regulatory taxes. The amount of unrecognized tax benefits may change in the next 12 months , however, the Company does not expect the change to have a significant impact on the results of operations or the financial position of the Company. Examinations The Company conducts business globally, and as a result, the Company or one or more of its subsidiaries files income tax returns in the United States federal jurisdiction and various state and foreign jurisdictions. In the normal course of business the Company is subject to examination by taxing authorities throughout the world. The open tax years contain matters that could be subject to differing interpretations of applicable tax laws and regulations as they relate to the amount, character, timing or inclusion of revenue and expenses or the applicability of income tax credits for the relevant tax period. Given the nature of tax audits there is a risk that disputes may arise. Tax years 2002 - 2014 remain open for examination.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Litigation The Company is subject to claims and legal proceedings that arise in the ordinary course of business. Such matters are inherently uncertain, and there can be no guarantee that the outcome of any such matter will be decided favorably to the Company or that the resolution of any such matter will not have a material adverse effect upon the Company’s consolidated financial statements. The Company does not believe that any of such pending claims and legal proceedings will have a material adverse effect on its consolidated financial statements. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in a liability and the amounts of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss to the extent necessary for the consolidated financial statements not to be misleading. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements. On November 6, 2014, a putative stockholder class action complaint challenging the tender offer by which HC2 acquired approximately 721,000 of the issued and outstanding common shares of Schuff was filed in the Court of Chancery of the State of Delaware, captioned Mark Jacobs v. Philip A. Falcone, Keith M. Hladek, Paul Voigt, Michael R. Hill, Rustin Roach, D. Ronald Yagoda, Phillip O. Elbert, HC2 Holdings, Inc., and Schuff International, Inc. , Civil Action No. 10323 (the “Complaint”). On November 17, 2014 , a second lawsuit was filed in the Court of Chancery of the State of Delaware, captioned Arlen Diercks v. Schuff International, Inc. Philip A. Falcone, Keith M. Hladek, Paul Voigt, Michael R. Hill, Rustin Roach, D. Ronald Yagoda, Phillip O. Elbert, HC2 Holdings, Inc. , Civil Action No. 10359. On February 19, 2015, the court consolidated the actions (now designated as Schuff International, Inc. Stockholders Litigation ) and appointed lead plaintiff and counsel. The currently operative complaint is the November 6, 2014 Complaint filed by Mark Jacobs. The Complaint alleges, among other things, that in connection with the tender offer, the individual members of the Schuff board of directors and HC2, the controlling stockholder of Schuff, breached their fiduciary duties to members of the plaintiff class. The Complaint also purports to challenge a potential short-form merger based upon plaintiff’s expectation that the Company would cash out the remaining public stockholders of Schuff International following the completion of the tender offer. Such a short-form merger has never been formally proposed or acted upon and as of September 30, 2015 , approximately 341 thousand shares of Schuff remain in public hands, representing approximately 9% of the outstanding shares of Schuff. The Complaint seeks rescission of the tender offer and/or compensatory damages, as well as attorney’s fees and other relief. The defendants filed answers to the Complaint on July 30, 2015. Defendants are currently preparing for the discovery phase of the case. We believe that the allegations and claims set forth in the Complaint are without merit and intend to defend them vigorously. On July 16, 2013, Plaintiffs Xplornet Communications Inc. and Xplornet Broadband, Inc. (“Xplornet”) initiated an action against Inukshuk Wireless Inc. (“Inukshuk”), Globility Communications Corporation (“Globility”), MIPPS Inc., Primus Telecommunications Canada Inc. ("PTCI") and Primus Telecommunications Group, Incorporated (n/k/a HC2)("PTGi"). Xplornet alleges that it entered into an agreement to acquire certain licenses for radio spectrum in Canada from Globility. Xplornet alleges that Globility agreed to sell Xplornet certain spectrum licenses in a Letter of Intent dated July 12, 2011 but then breached the Letter of Intent by selling the licenses to Inukshuk. Xplornet then alleges that they reached an agreement with Inukshuk to purchase the licenses on June 26, 2012, but that Inukshuk breached that agreement by not completing the sale. Xplornet alleges that, as a result of the foregoing, they have been damaged in the amount of $50 million . On January 29, 2014, Globility, MIPPS Inc., and PTCI, demanded indemnification pursuant to the Equity Purchase Agreement among PTUS, Inc., PTCAN, Inc., PTGi, Primus Telecommunications Holding, Inc., Lingo Holdings, Inc., and Primus Telecommunications International, Inc., dated as of May 10, 2013. On February 14, 2014, the Company assumed the defense of this litigation, while reserving all of its rights under the Equity Purchase Agreement. On February 5, 2014, Globility, MIPPS Inc., and PTCI filed a Notice of Intent to Defend. On February 18, 2014, Globility, MIPPS Inc., and PTCI filed a Demand for Particulars. A Notice of Change of Solicitors to Hunt Partners LLP was filed on behalf of those same entities on April 1, 2014. On March 13, 2015, Inukshuk filed a cross claim against Globility, MIPPS, PTCI, and PTGi. Inukshuk asserts that if Inukshuk is found liable to Xplornet, then Inukshuk is entitled to contribution and indemnity, compensatory damages, interest, and costs from the Company. Inukshuk alleges that Globility represented and warranted that it owned the licenses at issue, that Globility held the licenses free and clear, and that no third party had any rights to acquire them. Inukshuk claims breach of contract and misrepresentation if the Court finds that any of these representations are untrue. On October 17, 2014, the Company moved for summary judgment against Xplornet arguing that there was no agreement between Globility and Xplornet to acquire the licenses at issue. On June 5, 2015, Inukshuk also moved for summary judgment against Xplornet, similarly arguing that there was no agreement between Inukshuk and Xplornet to acquire the licenses in question. On September 17, 2015, Xplornet amended its claim to change its theory from breach of a written letter of intent allegedly accepted on July 12, 2011 to breach of an oral agreement allegedly entered on July 7, 2011. The Primus Defendants (including the Company) amended their Statement of Defence and motion for summary judgment on October 6, 2015 to include a statute of limitations defense based on this change in theory. The Primus Defendants (including the Company) also filed procedural motions relating to the amendment. Xplornet disputes that the amendment changed its theory and opposes summary judgment. The hearing on summary judgment is now re-scheduled from October 7, 2015 to March 31, 2016. Tax Matters Currently, the Canada Revenue Agency (“CRA”) is auditing a subsidiary previously held by the Company. The Company intends to cooperate in audit matters. To date, CRA has not proposed any specific adjustments and the audit is ongoing.

SHARE-BASED COMPENSATION

SHARE-BASED COMPENSATION	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
SHARE-BASED COMPENSATION	SHARE-BASED COMPENSATION On April 11, 2014, the Company’s Board of Directors adopted the HC2 Holdings, Inc. 2014 Omnibus Equity Award Plan (the “Omnibus Plan”), which was approved by our stockholders at the annual meeting of stockholders held on June 12, 2014. The Omnibus Plan provides that no further awards will be granted pursuant to the Company’s Management Compensation Plan, as amended (the “Prior Plan”). However, awards that had been previously granted pursuant to the Prior Plan will continue to be subject to and governed by the terms of the Prior Plan. As of September 30, 2015 , there were 467,371 shares of the Company’s common stock underlying outstanding awards under the Prior Plan. The Compensation Committee of the Board of Directors of the Company administers the Company’s Omnibus Plan and the Prior Plan and has broad authority to administer, construe and interpret the plans. The Omnibus Plan provides for the grant of awards of non-qualified stock options, incentive (qualified) stock options, stock appreciation rights, restricted stock awards, restricted stock units, other stock based awards, performance compensation awards (including cash bonus awards) or any combination of the foregoing. The Company typically issues new shares of common stock upon the exercise of stock options, as opposed to using treasury shares. The Omnibus Plan authorizes the issuance of up to 5,000,000 shares of the Company’s common stock, subject to adjustment as provided in the Omnibus Plan. The Company follows guidance which addresses the accounting for share-based payment transactions whereby an entity receives employee services in exchange for either equity instruments of the enterprise or liabilities that are based on the fair value of the enterprise’s equity instruments or that may be settled by the issuance of such equity instruments. The guidance generally requires that such transactions be accounted for using a fair-value based method and share-based compensation expense be recorded, based on the grant date fair value, estimated in accordance with the guidance, for all new and unvested stock awards that are ultimately expected to vest as the requisite service is rendered. There were 1,406,681 and 1,645,685 options granted during the nine months ended September 30, 2015 and 2014 , respectively. Of the total options granted during the nine months ended September 30, 2015 and 2014 , 885,173 and 1,568,864 , respectively, of such options were granted to Philip Falcone, pursuant to anti-dilution provisions of a standalone option agreement entered in connection with Mr. Falcone’s appointment as Chairman, President and Chief Executive Officer of the Company, and not pursuant to the Omnibus Plan. The weighted average fair value at date of grant for options granted during the nine months ended September 30, 2015 and 2014 was $1.55 and $1.40 , respectively, per option. The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions shown as a weighted average for the year: Nine Months Ended September 30, 2015 2014 Expected option life 5.38 years 6.00 years Risk-free interest rate 1.49% - 1.68% 1.96% - 2.73% Expected volatility 36.29% - 40.50% 36.74% - 37.80% Dividend yield — % — % Total share-based compensation expense recognized by the Company during the three months ended September 30, 2015 and 2014 was $2.3 million and $0.7 million , respectively. Total share-based compensation expense recognized by the Company during the nine months ended September 30, 2015 and 2014 was $6.9 million and $1.7 million , respectively. Most of the Company’s stock awards vest ratably during the vesting period. The Company recognizes compensation expense for equity awards using the straight-line basis. Restricted Stock A summary of the Company’s restricted stock activity during the nine months ended September 30, 2015 is as follows: Shares Weighted Average Grant Date Fair Value Unvested - December 31, 2014 338,702 $ 4.26 Granted 1,539,114 $ 9.14 Vested (1,008,253 ) $ 8.40 Forfeitures — $ — Unvested - September 30, 2015 869,563 $ 8.10 As of September 30, 2015 , the unvested restricted stock represented $3.7 million of compensation expense that is expected to be recognized over the weighted average remaining vesting period of 0.9 years . The number of shares of unvested restricted stock expected to vest is 869,563 . Stock Options A summary of the Company’s stock option activity during the nine months ended September 30, 2015 is as follows: Shares Weighted Average Exercise Price Outstanding - December 31, 2014 3,573,141 $ 4.27 Granted 1,406,681 $ 6.49 Exercised — $ — Forfeitures (764,529 ) $ 4.05 Outstanding - September 30, 2015 4,215,293 $ 5.05 Eligible for exercise 2,117,941 $ 5.02 Total options granted during the nine months ended September 30, 2015 include 715,476 options resulting from an option modification whereby 760,194 options were forfeited in the exchange. The modification related to the adjustment to the exercise price and number of options that are calculated on the Series A Preferred Stock. The Company has evaluated the impact of modification accounting under ASC 718 and concluded that the modification of terms of such instruments did not result in an increase in fair value before and after the modification date. The following table summarizes the intrinsic values and remaining contractual terms of the Company’s stock options: Intrinsic Value (in thousands) Weighted Average Remaining Life in Years Options Outstanding - September 30, 2015 $ 9,021 8.91 Options exercisable - September 30, 2015 $ 4,466 8.78 As of September 30, 2015 , the Company had 2,097,352 unvested stock options outstanding of which $1.8 million of compensation expense is expected to be recognized over the weighted average remaining vesting period of 0.74 years . The number of unvested stock options expected to vest is 2,097,352 shares, with a weighted average remaining life of 8.91 years , a weighted average exercise price of $5.05 , and an intrinsic value of $4.6 million .

EQUITY

EQUITY	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
EQUITY	EQUITY As of September 30, 2015 and December 31, 2014 , there were 25,592,356 and 23,813,085 shares of common stock outstanding, respectively. As of September 30, 2015 and December 31, 2014 , there were 54,000 and 41,000 shares of Preferred Stock outstanding, respectively. Preferred and Common Stock On May 29, 2014, the Company issued 30,000 shares of Series A Preferred Stock and 1,500,000 shares of common stock, the proceeds of which were used to pay for a portion of the purchase price for the acquisition of Schuff. On September 22, 2014, the Company issued 11,000 shares of Series A-1 Convertible Participating Preferred Stock of the Company (the “Series A-1 Preferred Stock”). Each share of Series A-1 Preferred Stock is convertible at a conversion price of $4.25 . On January 5, 2015, the Company issued 14,000 shares of Series A-2 Convertible Participating Preferred Stock of the Company (together with the Series A Preferred Stock and Series A-1 Preferred Stock, the “Preferred Stock”). Each share of Series A-2 Preferred Stock is convertible at a conversion price of $8.25 . In connection with the issuance of the Series A-2 Preferred Stock, the Company amended the certificates of designation governing the Series A Preferred Stock and Series A-1 Preferred Stock on January 5, 2015, which reflected the issuance of the Series A-2 Preferred Stock as a class of preferred stock which ranks at parity with the Series A Preferred Stock and Series A-1 Preferred Stock and made certain other changes to conform the terms of the Series A Preferred Stock and Series A-1 Preferred Stock to those of the Series A-2 Preferred Stock. The conversion prices for the Preferred Stock are subject to adjustments for dividends, certain distributions, stock splits, combinations, reclassifications, reorganizations, mergers, recapitalizations and similar events. The Preferred Stock will accrue a cumulative quarterly cash dividend at an annualized rate of 7.5% . The accrued value of the Preferred Stock will accrete quarterly at an annualized rate of 4% that will be reduced to 2% or 0% if the Company achieves specified rates of growth measured by increases in its net asset value. The Company recorded a beneficial conversion feature on its Series A-1 Preferred Stock as a result of the fair market value of the Company’s common stock exceeding the conversion price. The Company recorded a $0.3 million beneficial conversion feature on its Series A-1 Preferred Stock which was calculated using the intrinsic value ( $4.36 — $4.25 ) multiplied by the number of convertible common shares ( $11,000,000 / $4.25 ). Each share of Preferred Stock may be converted by the holder into common stock at any time based on the then-applicable conversion price. On the seventh anniversary of the issue date of the Series A Preferred Stock, holders of the Preferred Stock shall be entitled to cause the Company to redeem the Preferred Stock at the accrued value per share plus accrued but unpaid dividends. Each share of Preferred Stock that is not so redeemed will be automatically converted into shares of common stock at the conversion price then in effect. Upon a change of control, holders of the Preferred Stock shall be entitled to cause the Company to redeem their Preferred Stock at a price per share equal to the greater of (i) the accrued value of the Preferred Stock, which amount would be multiplied by 150% in the event of a change in control occurring on or prior to the third anniversary of the issue date of the Series A Preferred Stock plus and accrued but unpaid dividends and (ii) the value that would be received if the share of Preferred Stock were converted into common stock immediately prior to the change of control. Certain certificates of amendment related to the Company’s Preferred Stock (the “Prior Amendment”) did not become effective because they were filed without proper authorization of the stockholders of the Company. The holders of the Series A Preferred Stock agreed to release all claims against the Company relating to the ineffectiveness of the Prior Amendments, including the fact that the conversion price of the Series A Preferred Stock remains at $4.25 . The release of claims was granted as payment in full of the purchase price of the $5.0 million aggregate principal amount of the Additional 11% Notes issued to the holders of the Series A Preferred Stock in August 2015. The Company recorded this payment to other income (expense), net. At any time after the third anniversary of the issue date of the Series A Preferred Stock, the Company may redeem the Preferred Stock, in whole but not in part, at a price per share generally equal to 150% of the accrued value per share plus accrued but unpaid dividends. After the third anniversary of the issue date of the Series A Preferred Stock, the Company may force conversion of the Preferred Stock into common stock if the common stock’s thirty -day volume-weighted average price (“VWAP”) exceeds 150% of the then-applicable conversion price and the common stock’s daily VWAP exceeds 150% of the then-applicable conversion price for at least twenty trading days out of the thirty trading day period used to calculate the thirty -day VWAP. In the nine months ended September 30, 2015 , 1,000 shares of Series A-1 Preferred Stock were converted into 235,526 shares of common stock at the option of the holder. Dividends During 2015 , the Company’s Board of Directors declared cash dividends with respect to the Company’s issued and outstanding preferred stock, as presented in the following table (Total Dividend amount presented in thousands): Declaration Date March 31, 2015 June 30, 2015 September 30, 2015 Holders of Record Date March 31, 2015 June 30, 2015 September 30, 2015 Payment/Accrual Date April 15, 2015 July 15, 2015 October 15, 2015 Total Dividend $ 1,021 $ 1,020 $ 1,020

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
FAIR VALUE OF FINANCIAL INSTRUMENTS	FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Measurement U.S. GAAP establishes a hierarchical disclosure framework which prioritizes and ranks the level of market price observability used in measuring financial instruments at fair value. Market price observability is affected by a number of factors, including the type of financial instrument, the characteristics specific to the financial instrument and the state of the marketplace, including the existence and transparency of transactions between market participants. Financial instruments with readily available quoted prices in active markets generally will have a higher degree of market price observability and a lesser degree of judgment used in measuring fair value. Financial instruments measured and reported at fair value are classified and disclosed based on the observability of inputs used in the determination of fair values, as follows: • Level I — Quoted prices are available in active markets for identical financial instruments as of the reporting date. The type of financial instruments in Level I include listed equities. Under U.S. GAAP, the Company does not adjust the quoted price for these investments, even in situations where the Company holds a large position and a sale could reasonably impact the quoted price. • Level II — Pricing inputs are other than quoted prices in active markets, which are either directly or indirectly observable as of the reporting date, and fair value is determined through the use of models or other valuation methodologies. Financial instruments which are generally included in this category include long-term debt. • Level III — Pricing inputs are unobservable for the financial instruments and includes situations where there is little, if any, market activity for the financial instrument. The inputs into the determination of fair value require significant management judgment or estimation. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the determination of which category within the fair value hierarchy is appropriate for any given financial instrument is based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and considers factors specific to the financial instrument. There were no transfers between levels of the fair value hierarchy during the nine months ended September 30, 2015 . Assets by Hierarchy Level Assets measured and carried at fair value in the financial statements are summarized below (in thousands). September 30, 2015 Fair Value Measurement Using: Total Level 1 Level 2 Level 3 Common Equity $ 2,593 $ 2,593 $ — $ — Convertible Debt 7,162 — — 7,162 Warrants 612 — — 612 Cash Equivalents 58 58 — — December 31, 2014 Fair Value Measurement Using: Total Level 1 Level 2 Level 3 Common Equity $ 4,867 $ 4,867 $ — $ — Convertible Debt 250 — — 250 Cash Equivalents 908 908 — — The methods and assumptions the Company uses to estimate the fair value of assets and liabilities measured at fair value on a recurring basis are summarized below. Common Equity - consists of common stock of publicly traded companies. The fair values of publicly traded equity securities are based on quoted market prices in active markets. Convertible Debt (the Debenture) - the Debenture was valued at its as-converted value based on the number of as-converted shares as implied by the prevalent conversion price and Gaming Nation's common stock price as of the valuation date. Warrants (DTV) - the Company utilized a Black-Scholes model. Warrants were treated as European Options due to the absence of dividends, which creates a lack of incentive to exercise the warrants until the expiry date as an investor would prefer to earn interest on the cash to be used for exercising the warrants. The Company performed a sensitivity analysis around the implied value of the company's common stock when convertible debt was converted into common stock at $2.25 per share on June 30, 2015. The Company also calibrated the stock price based on changes in the market capitalization and enterprise value/EBITDA and revenue multiples for identified comparable companies through the valuation date. Cash Equivalents - consists of money market instruments which are generally valued using unadjusted quoted prices in active markets that are accessible for identical assets. Level 3 Measurements and Transfers Changes in balances of Level 3 financial assets carried at fair value during the nine months ended September 30, 2015 and 2014 are presented below (in thousands). Total realized/unrealized gains (losses) included in Balance at December 31, 2014 Net earnings (loss) Other comp. income (loss) Purchases and issuances Sales and settlements Transfers into Level 3 Transfers out of Level 3 Balance at September 30, 2015 Convertible Debt $ 250 $ — $ (3,398 ) $ 10,310 $ — $ — $ — $ 7,162 Warrants — 317 — 295 — — — 612 Total realized/unrealized gains (losses) included in Balance at December 31, 2013 Net earnings (loss) Other comp. income (loss) Purchases and issuances Sales and settlements Transfers into Level 3 Transfers out of Level 3 Balance at September 30, 2014 Convertible Debt $ — $ — $ — $ 250 $ — $ — $ — $ 250 Fair Value of Financial Instruments The Company is required by general accounting principles for Fair Value Measurements and Disclosures to disclose the fair value of certain financial instruments including those that are not carried at fair value. The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments, which were not measured at fair value on a recurring basis, at September 30, 2015 and December 31, 2014 . This table excludes carrying amounts reported in the condensed consolidated balance sheets for cash, accounts receivable, costs and recognized earnings in excess of billings, accounts payable, accrued expenses, billings in excess of costs and recognized earnings, and other current assets and liabilities approximate fair value due to relatively short periods to maturity. September 30, 2015 Estimated Fair Value Measurement Using: Carrying Value Fair Value Level 1 Level 2 Level 3 Assets Common Equity $ 4,933 $ 4,475 $ — $ — $ 4,475 Warrants 9,473 5,134 — — 5,134 Liabilities Long-term debt $ 334,469 $ 324,429 $ — $ 324,429 $ — December 31, 2014 Estimated Fair Value Measurement Using: Carrying Value Fair Value Level 1 Level 2 Level 3 Assets Warrants $ 2,956 $ 7,988 $ — $ — $ 7,988 Liabilities Long-term debt $ 278,195 $ 276,791 $ — $ 276,791 $ — Common Equity (DTV) – The Company performed a sensitivity analysis around the implied value of the company's common stock when convertible debt was converted into common stock at $2.25 per share on June 30, 2015. The Company also calibrated the stock price based on changes in the market capitalization and enterprise value/EBITDA and revenue multiples for identified comparable companies through the valuation date. Warrants - the Company utilized a Black-Scholes model to determine the estimated fair value of warrants convertible into Novatel's common stock and Monte Carlo simulation to determine the estimated fair value of the warrants convertible into Gaming Nation's common stock. Long-term Debt - The fair value of the Company’s long-term debt was determined using Bloomberg Valuation Service BVAL. The methodology combines direct market observations from contributed sources with quantitative pricing models to generate evaluated prices.

RELATED PARTIES

RELATED PARTIES	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
RELATED PARTIES	RELATED PARTIES In January 2015, the Company entered into a services agreement (the “Services Agreement”) with Harbinger Capital Partners, a related party of the Company, with respect to the provision of services that may include providing office space and operational support and each party making available their respective employees to provide services as reasonably requested by the other party, subject to any limitations contained in applicable employment agreements and the terms of the Services Agreement. The Company recognized $0.8 million and $1.1 million of expenses under the Service Agreement for the three and nine months ended September 30, 2015, respectively. GMSL has investments in various entities for which it exercises significant influence. A summary of transactions with such entities during the three and nine months ended September 30, 2015 and balances outstanding at September 30, 2015 is as follows (in thousands): Three Months Ended Nine Months Ended Net revenue $ 3,020 $ 17,507 Operating expenses 917 2,885 Interest expense 391 1,214 Dividends received 2,440 2,440 September 30, 2015 Accounts receivable $ 4,556 Long-term debt 37,904

OPERATING SEGMENT AND RELATED I

OPERATING SEGMENT AND RELATED INFORMATION	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
OPERATING SEGMENT AND RELATED INFORMATION	OPERATING SEGMENT AND RELATED INFORMATION The Company currently has two primary reportable geographic segments—United States and United Kingdom; and Other. The Company has six reportable operating segments based on management’s organization of the enterprise—Telecommunications, Life Sciences, Manufacturing, Marine Services, Utilities and Other. The Company also has a non-operating Corporate segment. Net revenue and long-lived assets by geographic segment is reported on the basis of where the entity is domiciled. All inter-segment revenues are eliminated. The Company has no single customer representing greater than 10% of its revenues. Summary information with respect to the Company’s geographic and operating segments is as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Net Revenue by Geographic Region United States $ 173,348 $ 161,402 $ 494,511 $ 266,390 United Kingdom 101,327 15,678 254,396 49,360 Other 2,792 2,353 11,350 3,623 Total $ 277,467 $ 179,433 $ 760,257 $ 319,373 Net Revenue by Segment Telecommunications $ 116,872 $ 41,267 $ 267,554 $ 126,731 Manufacturing 122,932 137,706 380,783 192,182 Utilities 1,841 460 4,432 460 Marine Services 35,062 — 105,939 — Other 760 — 1,549 — Total $ 277,467 $ 179,433 $ 760,257 $ 319,373 Income (Loss) from Operations Telecommunications $ (523 ) $ (1,344 ) $ (612 ) $ (1,241 ) Life Sciences (1,811 ) (495 ) (4,736 ) (1,430 ) Manufacturing 12,995 10,716 30,256 14,843 Utilities (164 ) (758 ) (638 ) (758 ) Marine Services 4,296 — 13,074 — Other (1,995 ) — (4,580 ) — Corporate (10,395 ) (8,044 ) (26,267 ) (16,523 ) Total $ 2,403 $ 75 $ 6,497 $ (5,109 ) Capital Expenditures Telecommunications $ 205 $ 38 $ 215 $ 294 Life Sciences 204 — 230 — Manufacturing 1,276 3,321 3,124 3,707 Utilities 1,184 41 2,842 41 Marine Services 816 — 10,188 — Other 152 — 152 — Corporate — — — 22 Total $ 3,837 $ 3,400 $ 16,751 $ 4,064 The above capital expenditures exclude assets acquired under terms of capital lease and vendor financing obligations. Summary information with respect to the Company’s geographic and operating segments is as follows (in thousands): September 30, December 31, Long-term investments Life Sciences $ 4,272 $ 1,916 Marine Services 34,654 26,401 Corporate 38,228 20,357 Total long-term investments $ 77,154 $ 48,674 Property, Plant and Equipment – Net United States $ 80,803 $ 87,091 United Kingdom 135,950 147,323 Other 5,089 5,437 Total Property, Plant and Equipment – Net $ 221,842 $ 239,851 Total Assets Telecommunications $ 75,809 $ 24,501 Life Sciences 11,191 11,007 Manufacturing 275,202 281,067 Utilities 29,779 25,391 Marine Services 259,945 283,948 Other (1) 6,998 6,369 Corporate 106,103 91,765 Total $ 765,027 $ 724,048 (1) Other includes property, plant and equipment—net, and total assets related to discontinued operations.

BACKLOG

BACKLOG	9 Months Ended
	Sep. 30, 2015
Risks and Uncertainties [Abstract]
BACKLOG	BACKLOG Schuff’s backlog was $381.6 million ( $245.9 million under contracts or purchase orders and $135.7 million under letters of intent) at September 30, 2015 . Schuff’s backlog increases as contract commitments, letters of intent, notices to proceed and purchase orders are obtained, decreases as revenues are recognized and increases or decreases to reflect modifications in the work to be performed under the contracts, notices to proceed, letters of intent or purchase orders. Schuff’s backlog can be significantly affected by the receipt, or loss, of individual contracts. Approximately $122.5 million , representing 32.1% of Schuff’s backlog at September 30, 2015 , was attributable to five contracts, letters of intent, notices to proceed or purchase orders. If one or more of these large contracts or other commitments are terminated or their scope reduced, Schuff’s backlog could decrease substantially.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	9 Months Ended
	Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS On July 31, 2013, the Company completed the sale of Lingo, Inc., iPrimus, USA, Inc., 3620212 Canada Inc., Primus Telecommunications Canada, Telesonic Communications Inc., and Globility Communications Corporation to affiliates of York Capital Management, an investment firm (together “York”), for $129 million . The sale of Primus Telecommunications, Inc. (“PTI”) was also contemplated as part of this transaction but was deferred pending receipt of regulatory approval of such sale. The closing of the sale of PTI, which constituted the remainder of our North America Telecom segment, was completed on July 31, 2014 upon receipt of the necessary regulatory approval. The Company recorded a $13.8 million gain from the sale of this segment during the year ended December 31, 2013 . In addition, the purchase agreement contains customary indemnification obligations, representations, warranties and covenants for a transaction of this nature. The Company received $126.0 million , net of $15.25 million held in escrow as part of the initial closing, with an additional $3.0 million held in escrow and paid upon closing of the sale of PTI. Pursuant to the terms of the purchase agreement, $6.45 million of the purchase price was placed in escrow to be released 14 months after the closing date, subject to any deductions required to satisfy indemnification obligations of the Company under the purchase agreement, which amount was released to the Company in October 2014. In addition, $4.0 million of the purchase price was placed in escrow to cover any payments required in connection with the post-closing working capital and cash adjustments, of which $3.2 million was disbursed to the Company and $0.8 million was disbursed to York upon completion of such adjustments in February 2014. The $0.8 million was recorded as an adjustment to the gain that was recorded in 2013, which resulted in a net gain from this transaction of $13.0 million . Furthermore, $4.8 million of the purchase price was placed in escrow to cover certain tax liabilities, which escrow amount will be released after a positive ruling with respect to the underlying matter is received or 30 days after expiration of the applicable statute of limitations relating to the underlying matter. The $4.8 million escrow deposit is recorded in other assets in the condensed consolidated balance sheets, of which $0.4 million is reserved. Summarized operating results of the discontinued operations are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Net revenue $ — $ 971 $ — $ 7,439 Operating expenses 24 1,045 61 7,387 Income (loss) from operations (24 ) (74 ) (61 ) 52 Interest expense — (14 ) — (17 ) Interest income and other income (expense) — (9 ) 4 (60 ) Income (loss) before income tax (24 ) (97 ) (57 ) (25 ) Income tax benefit (expense) — (9 ) 13 (37 ) Income (loss) from discontinued operations $ (24 ) $ (106 ) $ (44 ) $ (62 )

BASIC AND DILUTED INCOME (LOSS)

BASIC AND DILUTED INCOME (LOSS) PER COMMON SHARE	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
BASIC AND DILUTED INCOME (LOSS) PER COMMON SHARE	BASIC AND DILUTED INCOME (LOSS) PER COMMON SHARE Basic income (loss) per common share is calculated by dividing income (loss) attributable to common shareholders by the weighted average common shares outstanding during the period. Diluted income per common share adjusts basic income per common share for the effects of potentially dilutive common share equivalents. The Company had no dilutive common share equivalents during the three and nine months ended September 30, 2015 and 2014 due to the results of operations being a loss from continuing operations, net of tax. For the three and nine months ended September 30, 2015 , the Company had Preferred Stock, as well as outstanding stock options and unvested RSUs granted under the Prior Plan and Omnibus Plan that were potentially dilutive but were excluded from the calculation of diluted loss per common share due to their antidilutive effect. For the three and nine months ended September 30, 2014 , the Company had outstanding stock options and unvested RSUs granted under the Prior Plan as well as certain warrants that were potentially dilutive but were excluded from the calculation of diluted loss per common share due to their antidilutive effect. A calculation of basic income (loss) per common share to diluted income (loss) per common share is set forth below (in thousands, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Loss from continuing operations attributable to HC2 $ (5,581 ) $ (17,440 ) $ (24,015 ) $ (25,408 ) Loss from discontinued operations (24 ) (106 ) (44 ) (62 ) Gain (loss) from sale of discontinued operations — 663 — (121 ) Net loss - basic $ (5,605 ) $ (16,883 ) $ (24,059 ) $ (25,591 ) Net loss - diluted $ (5,605 ) $ (16,883 ) $ (24,059 ) $ (25,591 ) Weighted average common shares outstanding-basic 25,592 23,372 25,093 18,348 Weighted average common shares outstanding-diluted 25,592 23,372 25,093 18,348 Basic loss per common share: Loss from continuing operations attributable to HC2 $ (0.22 ) $ (0.75 ) $ (0.96 ) $ (1.38 ) Gain (loss) from sale of discontinued operations — 0.03 — (0.01 ) Net loss attributable to HC2 $ (0.22 ) $ (0.72 ) $ (0.96 ) $ (1.39 ) Diluted loss per common share: Loss from continuing operations attributable to HC2 $ (0.22 ) $ (0.75 ) $ (0.96 ) $ (1.38 ) Gain (loss) from sale of discontinued operations — 0.03 — (0.01 ) Net loss attributable to HC2 $ (0.22 ) $ (0.72 ) $ (0.96 ) $ (1.39 )

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On October 16, 2015, the Company announced a proposed offering of our common stock in a registered public offering. The offering was made by means of a prospectus supplement to a previously filed Registration Statement on Form S-3, which was declared effective by the U.S. Securities and Exchange Commission on October 27, 2015. On November 4, 2015, the Company issued 7,350,000 shares of its common stock in an underwritten public offering (which included 1,800,000 shares pursuant to an option to purchase shares of the Company's common stock granted by the underwriters). In addition the Company granted an over-allotment option to purchase an additional 1,102,500 shares of common stock at the public offering price of $7.00 per share, less underwriting discounts. The gross proceeds from this equity offering were approximately $51.5 million before deducting underwriting discounts, commissions, and estimated offering expenses. The Company intends to use the funds to finance investments in existing subsidiaries and operations, and potential acquisitions, including all or a portion of the consideration for the insurance companies acquisitions, development and redevelopment activities, debt repayments, the repurchase or redemption of preferred stock and for other general corporate purposes. On November 5, 2015 the Company announced that the underwriter of the previously announced underwritten public offering of 7,350,000 newly issued shares of the Company’s common stock has exercised its over-allotment option to purchase an additional 1,102,500 shares of common stock at the public offering price of $7.00 per share, less underwriting discounts. After giving effect to the over-allotment closing, the total number of shares sold by the Company in its offering increased to 8,452,500 shares, which resulted in aggregate gross proceeds of approximately $59.2 million , before deducting underwriting discounts, commissions, and estimated offering expenses. On November 5, 2015 the Company also announced that it expects to receive an $8.2 million dividend from its subsidiary, Schuff International, Inc., on December 1, 2015.

SUMMARY OF SIGNIFICANT ACCOUN28

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation - The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial reporting and Securities and Exchange Commission (“SEC”) regulations. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such principles and regulations. In the opinion of management, the financial statements reflect all adjustments (all of which are of a normal and recurring nature), which are necessary to present fairly the financial position, results of operations, cash flows and comprehensive income (loss) for the interim periods. The results for the Company’s three and nine months ended September 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015 . The financial statements should be read in conjunction with the Company’s audited consolidated financial statements included in the Company’s most recently filed Annual Report on Form 10-K.
Principles of Consolidation	Principles of Consolidation - The condensed consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries and all other subsidiaries over which the Company exerts control. All intercompany profits, transactions and balances have been eliminated in consolidation.
Reclassification	Reclassification - Certain previous year amounts have been reclassified to conform with current year presentations related to the reporting of new balance sheet line items.
Newly Adopted Accounting Principles and New Accounting Pronouncements	Newly Adopted Accounting Principles - In April 2014, an update was issued to the Presentation of Financial Statements Topic No. 205 and Property, Plant and Equipment Topic No. 360, Accounting Standards Update (“ASU”) 2014-8, “Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity”, which changes the criteria for reporting discontinued operations. The ASU revises the definition of a discontinued operation and expands the disclosure requirements. Entities should not apply the amendments to a component of an entity that is classified as held for sale before the effective date even if it is disposed of after the effective date. That is, the ASU must be adopted prospectively. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been previously reported in the financial statements. On January 1, 2015, the Company adopted this update, which did not have a material impact on the condensed consolidated financial statements. New Accounting Pronouncements - In September 2015, the FASB issued ASU 2015-16, “Business Combination Topic No. 805: Simplifying the Accounting for Measurement - Period Adjustments”, which requires adjustments to provisional amounts that are identified during the measurement period to be recognized in the reporting period in which the adjustment amounts are determined. This includes any effect on earnings of changes in depreciation, amortization, or other income effects as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In August 2015, the FASB issued ASU 2015-15, “Interest - Imputation of Interest Subtopic No. 835-30: Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements”, which codifies an SEC staff announcement that entities are permitted to defer and present debt issuance costs related to line-of-credit arrangements as assets. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In August 2015, the FASB issued ASU 2015-14, “Revenue from Contracts with Customers Topic No. 606: Deferral of the Effective Date”, which defers the effective date of the new revenue recognition standard by one year. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2018. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In July 2015, the FASB issued ASU 2015-11, “Inventory Topic No. 330: Simplifying the Measurement of Inventory”, which requires inventory within the scope of the ASU to be measured using the lower of cost and net realizable value. Inventory excluded from the scope of the ASU will continue to be measured at the lower of cost or market. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2017. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In May 2015, the FASB issued ASU 2015-8, “Business Combinations Topic No. 805: Pushdown Accounting-Amendments to SEC Paragraphs Pursuant to Staff Accounting Bulletin No. 115 (SEC Update)”, which rescinds certain SEC guidance in order to confirm with ASU 2014-17, “Pushdown Accounting” (“ASU 2014-17”). ASU 2014-17 was issued in November 2014 and provides a reporting entity that is a business or nonprofit activity (an “acquiree”) the option to apply pushdown accounting to its separate financial statements when an acquirer obtains control of the acquiree. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In April 2015, the FASB issued ASU 2015-3, “Interest-Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs”, which requires that debt issuance costs be reported in the balance sheet as a direct deduction from the face amount of the related liability, consistent with the presentation of debt discounts. Prior to the amendments, debt issuance costs were presented as a deferred charge (i.e., an asset) on the balance sheet. This ASU provides examples illustrating the balance sheet presentation of notes net of their related discounts and debt issuance costs. Further, the amendments require the amortization of debt issuance costs to be reported as interest expense. Similarly, debt issuance costs and any discount or premium are considered in the aggregate when determining the effective interest rate on the debt. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In February 2015, the FASB issued ASU 2015-2, “Amendments to the Consolidation Analysis”, which amends the consolidation requirements in ASC 810 and significantly changes the consolidation analysis required under U.S. GAAP relating to whether or not to consolidate certain legal entities. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change. In January 2015, the FASB issued ASU 2015-1, “Simplifying Income Statement Presentation by Eliminating the Concept of Extraordinary Items”, which eliminates the concept from U.S. GAAP the concept of an extraordinary item. Under the ASU, an entity will no longer (1) segregate an extraordinary item from the results of ordinary operations; (2) separately present an extraordinary item on its income statement, net of tax, after income from continuing operations; or (3) disclose income taxes and earnings-per-share data applicable to an extraordinary item. Early adoption is permitted. The Company’s effective date for adoption is January 1, 2016. The Company does not expect this accounting update to have a material effect on its consolidated financial statements in future periods, although that could change.

BUSINESS COMBINATIONS (Tables)

BUSINESS COMBINATIONS (Tables)	9 Months Ended
	Sep. 30, 2015
Business Acquisition [Line Items]
Schedule of unaudited consolidated pro forma results of operations	The following schedule presents unaudited consolidated pro forma results of operations data as if the acquisitions of Schuff, ANG and GMSL had occurred on January 1, 2014. This information neither purports to be indicative of the actual results that would have occurred if the acquisitions had actually been completed on the date indicated, nor is it necessarily indicative of the future operating results or the financial position of the combined company (in thousands, except per share amounts): Three Months Ended Nine Months Ended Net revenue $ 223,927 $ 630,035 Net income (loss) from continuing operations (11,009 ) 1,636 Net income (loss) from discontinued operations (3,067 ) (3,115 ) Gain (loss) from sale of discontinued operations 663 (121 ) Net income (loss) attributable to HC2 $ (13,413 ) $ (1,600 ) Per share amounts: Income (loss) from continuing operations $ (0.47 ) $ 0.09 Income (loss) from discontinued operations (0.13 ) (0.17 ) Gain (loss) from sale of discontinued operations 0.03 (0.01 ) Net income (loss) attributable to HC2 $ (0.57 ) $ (0.09 )
Schedule of net revenue and net income (loss) recorded	The Company recorded net revenue and net income (loss) as follows (in thousands): Three Months Ended September 30, 2014 Nine Months Ended September 30, 2014 Net Revenue Net Income (Loss) Net Revenue Net Income (Loss) Schuff $ 137,706 $ 3,491 $ 192,182 $ 6,065 ANG 460 (386 ) 460 (386 )
Schuff
Business Acquisition [Line Items]
Schedule of purchase price allocation	The purchase price allocation is as follows (in thousands): Cash and cash equivalents $ (627 ) Investments 1,714 Accounts receivable 130,622 Costs and recognized earnings in excess of billings on uncompleted contracts 27,126 Prepaid expenses and other current assets 3,079 Inventories 14,487 Property and equipment, net 85,662 Goodwill 24,490 Trade names 4,478 Other assets 2,947 Total assets acquired 293,978 Accounts payable 37,621 Accrued payroll and employee benefits 11,668 Accrued expenses and other current liabilities 12,532 Billings in excess of costs and recognized earnings on uncompleted contracts 65,985 Accrued income taxes 1,202 Accrued interest 76 Current portion of long-term debt 15,460 Long-term debt 4,375 Deferred tax liability 7,693 Other liabilities 604 Noncontrolling interest 4,365 Total liabilities assumed 161,581 Enterprise value 132,397 Less fair value of noncontrolling interest 53,647 Purchase price attributable to controlling interest $ 78,750
ANG
Business Acquisition [Line Items]
Schedule of purchase price allocation	The purchase price allocation is as follows (in thousands): Cash and cash equivalents $ 15,704 Accounts receivable 306 Prepaid expenses and other current assets 31 Inventories 27 Property and equipment, net 1,921 Customer contracts 2,700 Trade names 6,300 Other assets 2 Total assets acquired 26,991 Accounts payable 49 Accrued payroll and employee benefits 5 Accrued expenses and other current liabilities 26 Billings in excess of costs and recognized earnings on uncompleted contracts 114 Current portion of long-term debt 34 Long-term debt 870 Deferred tax liability 3,349 Total liabilities assumed 4,447 Fair value of net assets acquired 22,544 Less purchase price 15,500 Less fair value of noncontrolling interest 2,189 Excess of fair value of net assets over purchase price $ 4,855
GMSL
Business Acquisition [Line Items]
Schedule of purchase price allocation	The purchase price allocation is as follows (in thousands): Cash and cash equivalents $ 62,555 Accounts receivable 26,183 Prepaid expenses and other current assets 22,111 Inventories 7,395 Restricted cash 4,682 Property and equipment, net 152,022 Customer contracts 8,121 Trade name 1,137 Developed technology 1,299 Goodwill 493 Investments 28,876 Other assets 7,482 Total assets acquired 322,356 Accounts payable 8,965 Accrued expenses and other current liabilities 46,992 Accrued income taxes 1,251 Current portion of long-term debt 8,140 Long-term debt 78,356 Pension liability 45,923 Deferred tax liability 1,163 Other liabilities 1,178 Total liabilities assumed 191,968 Enterprise value 130,388 Less fair value of noncontrolling interest 3,803 Purchase price attributable to controlling interest $ 126,585

ACCOUNTS RECEIVABLE (Tables)

ACCOUNTS RECEIVABLE (Tables)	9 Months Ended
	Sep. 30, 2015
Receivables [Abstract]
Schedule of accounts receivable	Accounts receivable consist of the following (in thousands): September 30, 2015 December 31, 2014 Contract receivables: Contracts in progress $ 116,353 $ 105,071 Unbilled retentions 29,292 32,850 Trade receivables 43,235 16,202 Other receivables 170 195 Allowance for doubtful accounts (1,576 ) (2,760 ) $ 187,474 $ 151,558

CONTRACTS IN PROGRESS (Tables)

CONTRACTS IN PROGRESS (Tables)	9 Months Ended
	Sep. 30, 2015
Contractors [Abstract]
Schedule of costs and recognized earnings in excess of billings on uncompleted contracts and billings in excess of costs and recognized earnings on uncompleted contracts	Costs and recognized earnings in excess of billings on uncompleted contracts and billings in excess of costs and recognized earnings on uncompleted contracts consist of the following (in thousands): September 30, 2015 December 31, 2014 Costs incurred on contracts in progress $ 636,345 $ 531,129 Estimated earnings 96,953 73,540 733,298 604,669 Less progress billings 716,077 618,530 $ 17,221 $ (13,861 ) The above is included in the accompanying condensed consolidated balance sheet under the following captions: Costs and recognized earnings in excess of billings on uncompleted contracts 37,266 28,098 Billings in excess of costs and recognized earnings on uncompleted contracts 20,045 41,959 $ 17,221 $ (13,861 )

INVENTORIES (Tables)

INVENTORIES (Tables)	9 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Summary of Inventories	Inventories consist of the following (in thousands): September 30, 2015 December 31, 2014 Raw materials $ 12,294 $ 12,956 Work in process 1,697 1,779 Finished goods 417 240 $ 14,408 $ 14,975

INVESTMENTS (Tables)

INVESTMENTS (Tables)	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Summary of long-term investments	The Company's long-term investments are summarized as follows (in thousands): September 30, 2015 Cost Unrealized Gains Unrealized Losses Carrying Value Common Equity Novatel Wireless, Inc. $ 11,430 $ — $ — $ 11,430 DTV America Corporation 2,828 1,856 — 4,684 Total Common Equity 14,258 1,856 — 16,114 Preferred Equity NerVve Technologies, Inc. 4,619 — — 4,619 Benevir Biopharm, Inc. 1,429 — — 1,429 MediBeacon, Inc. 2,842 — — 2,842 Total Preferred Equity 8,890 — — 8,890 GMSL Joint Ventures S. B. Submarine Systems Co., Ltd. 17,680 — — 17,680 International Cableship Pte., Ltd. 1,181 — — 1,181 Sembawang Cable Depot Pte., Ltd. 1,011 — — 1,011 Huawei Marine Networks Co., Ltd 14,351 — — 14,351 Visser Smit Global Marine Partnership 430 — — 430 Total GMSL Joint Ventures 34,653 — — 34,653 Convertible Debt Gaming Nation, Inc. 10,060 — (3,398 ) 6,662 mParticle 500 — — 500 Total Convertible Debt 10,560 — (3,398 ) 7,162 Warrants Novatel Wireless, Inc. 3,097 — — 3,097 Gaming Nation, Inc 6,036 — (443 ) 5,593 DTV America Corporation 295 317 — 612 Total Warrants 9,428 317 (443 ) 9,302 Other Equity Kaneland, LLC 1,033 — — 1,033 Total long-term investments $ 78,822 $ 2,173 $ (3,841 ) $ 77,154 December 31, 2014 Cost Unrealized Gains Unrealized Losses Carrying Value Common Equity Novatel Wireless, Inc. 10,462 — — 10,462 Preferred Equity NerVve Technologies, Inc. 5,538 — — 5,538 Benevir Biopharm, Inc. 1,915 — — 1,915 Total Preferred Equity 7,453 — — 7,453 GMSL Joint Ventures Global Cable Technology Ltd. 50 — — 50 S. B. Submarine Systems Co., Ltd. 12,882 — — 12,882 International Cableship Pte., Ltd. 2,111 — — 2,111 Sembawang Cable Depot Pte., Ltd. 808 — — 808 Huawei Marine Networks Co., Ltd 10,087 — — 10,087 Visser Smit Global Marine Partnership 464 — — 464 Total GMSL Joint Ventures 26,402 — — 26,402 Convertible Debt mParticle 250 — — 250 Warrants Novatel Wireless, Inc. 2,956 — — 2,956 Other Equity Kaneland, LLC 1,151 — — 1,151 Total long-term investments $ 48,674 $ — $ — $ 48,674
Summary of income statement information for significant equity method investments	Summarized income statement information for our significant equity method investments for the nine months ended August 31, 2015 (which we record on a one month lag) is as follows (in thousands): Net Revenue $159,339 Gross Profit 40,736 Loss from continuing operations (25,749 ) Net loss (31,192 )

GOODWILL AND OTHER INTANGIBLE34

GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)	9 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of the changes in the carrying amount of goodwill by reporting unit	The changes in the carrying amount of goodwill by reporting unit for the nine months ended September 30, 2015 are as follows (in thousands): Schuff GMSL ICS Other Total Balance as of December 31, 2014 $ 24,612 $ — $ 3,378 $ — $ 27,990 Effect of change in foreign currency exchange rates — — — — — Acquisition of business (122 ) 1,016 — 1,781 2,675 Balance as of September 30, 2015 $ 24,490 $ 1,016 $ 3,378 $ 1,781 $ 30,665
Schedule of intangible assets subject to amortization	Intangible assets subject to amortization consisted of the following (in thousands): Schuff GMSL ANG Pansend Other Corporate Total Trade names Balance as of December 31, 2014 $ 4,304 $ 997 $ 6,037 $ — $ — $ — $ 11,338 Effect of change in foreign currency exchange rates — (26 ) — — — — (26 ) Amortization (224 ) (265 ) (472 ) — — — (961 ) Acquisition of business — — — — — — — Reclassification — — — — — — — Balance as of September 30, 2015 $ 4,080 $ 706 $ 5,565 $ — $ — $ — $ 10,351 Customer relationships Balance as of December 31, 2014 $ — $ 7,333 $ 4,881 $ — $ — $ — $ 12,214 Effect of change in foreign currency exchange rates — (155 ) — — — — (155 ) Amortization — (380 ) (325 ) — — — (705 ) Acquisition of business — — — — — — — Reclassification — — — — — — — Balance as of September 30, 2015 $ — $ 6,798 $ 4,556 $ — $ — $ — $ 11,354 Developed technology Balance as of December 31, 2014 $ — $ 1,456 $ — $ — $ — $ — $ 1,456 Effect of change in foreign currency exchange rates — (37 ) — — — — (37 ) Amortization — (227 ) — — (638 ) — (865 ) Acquisition of business — — — — — — — Reclassification — — — — 4,195 — 4,195 Balance as of September 30, 2015 $ — $ 1,192 $ — $ — $ 3,557 $ — $ 4,749 Other Balance as of December 31, 2014 $ — $ — $ — $ 114 $ 6,000 $ 22 $ 6,136 Effect of change in foreign currency exchange rates — — — — — — — Amortization — — — (1 ) — — (1 ) Acquisition of business — — — — — — — Asset acquisition — — 20 65 — — 85 Reclassification — — — — (6,000 ) — (6,000 ) Balance as of September 30, 2015 $ — $ — $ 20 $ 178 $ — $ 22 $ 220 Total amortizable intangible assets Balance as of December 31, 2014 $ 4,304 $ 9,786 $ 10,918 $ 114 $ 6,000 $ 22 $ 31,144 Effect of change in foreign currency exchange rates — (218 ) — — — — (218 ) Amortization (224 ) (872 ) (797 ) (1 ) (638 ) — (2,532 ) Acquisition of business — — — — — — — Asset acquisition — — 20 65 — — 85 Reclassification — — — — (1,805 ) — (1,805 ) Balance as of September 30, 2015 $ 4,080 $ 8,696 $ 10,141 $ 178 $ 3,557 $ 22 $ 26,674

LONG-TERM OBLIGATIONS (Tables)

LONG-TERM OBLIGATIONS (Tables)	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Schedule of long-term debt	Long-term debt consists of the following (in thousands): September 30, 2015 December 31, 2014 Senior Secured Notes collateralized by certain of the Company's and its subsidiaries' assets, with interest payable semi-annually based on a fixed annual interest rate of 11% with principal due in 2019 $ 305,000 $ 250,000 Note payable collateralized by GMSL's assets, with interest payable monthly at LIBOR plus 3.65% and principal payable monthly, maturing in 2019 13,432 16,732 Note payable collateralized by Schuff's real estate, with interest payable monthly at LIBOR plus 4% and principal payable monthly, maturing in 2019 4,167 4,635 Note payable collateralized by Schuff's equipment, with interest payable monthly at LIBOR plus 4% and principal payable monthly, maturing in 2019 11,029 8,333 Line of credit collateralized by Schuff's HOPSA assets, with interest payable monthly at 5.25% plus 1% of Special Interest Compensation Fund 2,000 — Note payable collateralized by ANG's assets, with interest payable monthly at 5.5% and principal payable monthly, maturing in 2018 698 810 Obligations under capital leases 53,389 65,176 Other 22 30 Credit and security agreement for Schuff to advance up to a maximum amount of $50.0 million — — Subtotal 389,737 345,716 Original issue discount on Senior Secured Notes (1,879 ) (2,345 ) Subtotal 387,858 343,371 Less: Current portion of long-term obligations 13,454 10,444 Total long-term obligations $ 374,404 $ 332,927
Schedule of aggregate debt maturities	Aggregate debt maturities are as follows (in thousands): 2015 $ 4,881 2016 11,684 2017 11,953 2018 14,880 2019 317,910 Thereafter 28,429 $ 389,737
Schedule of aggregate maturities for capital leases	Aggregate maturities for the capital leases are as follows (in thousands): 2015 $ 1,681 2016 6,706 2017 6,697 2018 10,208 2019 10,207 Thereafter 30,938 Total minimum principal & interest payments 66,437 Less: Amount representing interest (13,048 ) Total capital lease obligations $ 53,389

SHARE-BASED COMPENSATION (Table

SHARE-BASED COMPENSATION (Tables)	9 Months Ended
	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of fair value of each option grant estimated	The fair value of each option grant was estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions shown as a weighted average for the year: Nine Months Ended September 30, 2015 2014 Expected option life 5.38 years 6.00 years Risk-free interest rate 1.49% - 1.68% 1.96% - 2.73% Expected volatility 36.29% - 40.50% 36.74% - 37.80% Dividend yield — % — %
Summary of restricted stock activity	A summary of the Company’s restricted stock activity during the nine months ended September 30, 2015 is as follows: Shares Weighted Average Grant Date Fair Value Unvested - December 31, 2014 338,702 $ 4.26 Granted 1,539,114 $ 9.14 Vested (1,008,253 ) $ 8.40 Forfeitures — $ — Unvested - September 30, 2015 869,563 $ 8.10
Summary of stock option activity	A summary of the Company’s stock option activity during the nine months ended September 30, 2015 is as follows: Shares Weighted Average Exercise Price Outstanding - December 31, 2014 3,573,141 $ 4.27 Granted 1,406,681 $ 6.49 Exercised — $ — Forfeitures (764,529 ) $ 4.05 Outstanding - September 30, 2015 4,215,293 $ 5.05 Eligible for exercise 2,117,941 $ 5.02
Summary of intrinsic values and remaining contractual terms of stock options	The following table summarizes the intrinsic values and remaining contractual terms of the Company’s stock options: Intrinsic Value (in thousands) Weighted Average Remaining Life in Years Options Outstanding - September 30, 2015 $ 9,021 8.91 Options exercisable - September 30, 2015 $ 4,466 8.78

EQUITY (Tables)

EQUITY (Tables)	9 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Summary of board of directors cash dividends declared	During 2015 , the Company’s Board of Directors declared cash dividends with respect to the Company’s issued and outstanding preferred stock, as presented in the following table (Total Dividend amount presented in thousands): Declaration Date March 31, 2015 June 30, 2015 September 30, 2015 Holders of Record Date March 31, 2015 June 30, 2015 September 30, 2015 Payment/Accrual Date April 15, 2015 July 15, 2015 October 15, 2015 Total Dividend $ 1,021 $ 1,020 $ 1,020

FAIR VALUE OF FINANCIAL INSTR38

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets measured and carried at fair value in the financial statements are summarized below (in thousands). September 30, 2015 Fair Value Measurement Using: Total Level 1 Level 2 Level 3 Common Equity $ 2,593 $ 2,593 $ — $ — Convertible Debt 7,162 — — 7,162 Warrants 612 — — 612 Cash Equivalents 58 58 — — December 31, 2014 Fair Value Measurement Using: Total Level 1 Level 2 Level 3 Common Equity $ 4,867 $ 4,867 $ — $ — Convertible Debt 250 — — 250 Cash Equivalents 908 908 — —
Changes in Balances of Level 3 Financial Assets at Fair Value	Changes in balances of Level 3 financial assets carried at fair value during the nine months ended September 30, 2015 and 2014 are presented below (in thousands). Total realized/unrealized gains (losses) included in Balance at December 31, 2014 Net earnings (loss) Other comp. income (loss) Purchases and issuances Sales and settlements Transfers into Level 3 Transfers out of Level 3 Balance at September 30, 2015 Convertible Debt $ 250 $ — $ (3,398 ) $ 10,310 $ — $ — $ — $ 7,162 Warrants — 317 — 295 — — — 612 Total realized/unrealized gains (losses) included in Balance at December 31, 2013 Net earnings (loss) Other comp. income (loss) Purchases and issuances Sales and settlements Transfers into Level 3 Transfers out of Level 3 Balance at September 30, 2014 Convertible Debt $ — $ — $ — $ 250 $ — $ — $ — $ 250
Financial Instruments Measured at Fair Value on Nonrecurring Basis	The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments, which were not measured at fair value on a recurring basis, at September 30, 2015 and December 31, 2014 . This table excludes carrying amounts reported in the condensed consolidated balance sheets for cash, accounts receivable, costs and recognized earnings in excess of billings, accounts payable, accrued expenses, billings in excess of costs and recognized earnings, and other current assets and liabilities approximate fair value due to relatively short periods to maturity. September 30, 2015 Estimated Fair Value Measurement Using: Carrying Value Fair Value Level 1 Level 2 Level 3 Assets Common Equity $ 4,933 $ 4,475 $ — $ — $ 4,475 Warrants 9,473 5,134 — — 5,134 Liabilities Long-term debt $ 334,469 $ 324,429 $ — $ 324,429 $ — December 31, 2014 Estimated Fair Value Measurement Using: Carrying Value Fair Value Level 1 Level 2 Level 3 Assets Warrants $ 2,956 $ 7,988 $ — $ — $ 7,988 Liabilities Long-term debt $ 278,195 $ 276,791 $ — $ 276,791 $ —

RELATED PARTIES (Tables)

RELATED PARTIES (Tables)	9 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Summary of transactions and balances outstanding	A summary of transactions with such entities during the three and nine months ended September 30, 2015 and balances outstanding at September 30, 2015 is as follows (in thousands): Three Months Ended Nine Months Ended Net revenue $ 3,020 $ 17,507 Operating expenses 917 2,885 Interest expense 391 1,214 Dividends received 2,440 2,440 September 30, 2015 Accounts receivable $ 4,556 Long-term debt 37,904

OPERATING SEGMENT AND RELATED40

OPERATING SEGMENT AND RELATED INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Summary of operating activity and capital expenditures of geographic and operating segments	Summary information with respect to the Company’s geographic and operating segments is as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Net Revenue by Geographic Region United States $ 173,348 $ 161,402 $ 494,511 $ 266,390 United Kingdom 101,327 15,678 254,396 49,360 Other 2,792 2,353 11,350 3,623 Total $ 277,467 $ 179,433 $ 760,257 $ 319,373 Net Revenue by Segment Telecommunications $ 116,872 $ 41,267 $ 267,554 $ 126,731 Manufacturing 122,932 137,706 380,783 192,182 Utilities 1,841 460 4,432 460 Marine Services 35,062 — 105,939 — Other 760 — 1,549 — Total $ 277,467 $ 179,433 $ 760,257 $ 319,373 Income (Loss) from Operations Telecommunications $ (523 ) $ (1,344 ) $ (612 ) $ (1,241 ) Life Sciences (1,811 ) (495 ) (4,736 ) (1,430 ) Manufacturing 12,995 10,716 30,256 14,843 Utilities (164 ) (758 ) (638 ) (758 ) Marine Services 4,296 — 13,074 — Other (1,995 ) — (4,580 ) — Corporate (10,395 ) (8,044 ) (26,267 ) (16,523 ) Total $ 2,403 $ 75 $ 6,497 $ (5,109 ) Capital Expenditures Telecommunications $ 205 $ 38 $ 215 $ 294 Life Sciences 204 — 230 — Manufacturing 1,276 3,321 3,124 3,707 Utilities 1,184 41 2,842 41 Marine Services 816 — 10,188 — Other 152 — 152 — Corporate — — — 22 Total $ 3,837 $ 3,400 $ 16,751 $ 4,064
Summary of assets of geographic and operating segments	Summary information with respect to the Company’s geographic and operating segments is as follows (in thousands): September 30, December 31, Long-term investments Life Sciences $ 4,272 $ 1,916 Marine Services 34,654 26,401 Corporate 38,228 20,357 Total long-term investments $ 77,154 $ 48,674 Property, Plant and Equipment – Net United States $ 80,803 $ 87,091 United Kingdom 135,950 147,323 Other 5,089 5,437 Total Property, Plant and Equipment – Net $ 221,842 $ 239,851 Total Assets Telecommunications $ 75,809 $ 24,501 Life Sciences 11,191 11,007 Manufacturing 275,202 281,067 Utilities 29,779 25,391 Marine Services 259,945 283,948 Other (1) 6,998 6,369 Corporate 106,103 91,765 Total $ 765,027 $ 724,048 (1) Other includes property, plant and equipment—net, and total assets related to discontinued operations.

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	9 Months Ended
	Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Summary of operating results of discontinued operations	Summarized operating results of the discontinued operations are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Net revenue $ — $ 971 $ — $ 7,439 Operating expenses 24 1,045 61 7,387 Income (loss) from operations (24 ) (74 ) (61 ) 52 Interest expense — (14 ) — (17 ) Interest income and other income (expense) — (9 ) 4 (60 ) Income (loss) before income tax (24 ) (97 ) (57 ) (25 ) Income tax benefit (expense) — (9 ) 13 (37 ) Income (loss) from discontinued operations $ (24 ) $ (106 ) $ (44 ) $ (62 )

BASIC AND DILUTED INCOME (LOS42

BASIC AND DILUTED INCOME (LOSS) PER COMMON SHARE (Tables)	9 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Summary of calculation of basic income (loss) per common share to diluted income (loss) per common share	A calculation of basic income (loss) per common share to diluted income (loss) per common share is set forth below (in thousands, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Loss from continuing operations attributable to HC2 $ (5,581 ) $ (17,440 ) $ (24,015 ) $ (25,408 ) Loss from discontinued operations (24 ) (106 ) (44 ) (62 ) Gain (loss) from sale of discontinued operations — 663 — (121 ) Net loss - basic $ (5,605 ) $ (16,883 ) $ (24,059 ) $ (25,591 ) Net loss - diluted $ (5,605 ) $ (16,883 ) $ (24,059 ) $ (25,591 ) Weighted average common shares outstanding-basic 25,592 23,372 25,093 18,348 Weighted average common shares outstanding-diluted 25,592 23,372 25,093 18,348 Basic loss per common share: Loss from continuing operations attributable to HC2 $ (0.22 ) $ (0.75 ) $ (0.96 ) $ (1.38 ) Gain (loss) from sale of discontinued operations — 0.03 — (0.01 ) Net loss attributable to HC2 $ (0.22 ) $ (0.72 ) $ (0.96 ) $ (1.39 ) Diluted loss per common share: Loss from continuing operations attributable to HC2 $ (0.22 ) $ (0.75 ) $ (0.96 ) $ (1.38 ) Gain (loss) from sale of discontinued operations — 0.03 — (0.01 ) Net loss attributable to HC2 $ (0.22 ) $ (0.72 ) $ (0.96 ) $ (1.39 )

ORGANIZATION AND BUSINESS (Deta

ORGANIZATION AND BUSINESS (Details) $ / shares in Units, $ in Thousands, £ in Millions	Sep. 22, 2014USD ($)	Aug. 31, 2015USD ($)shares	Apr. 30, 2015USD ($)$ / sharesshares	Mar. 31, 2015USD ($)shares	Feb. 28, 2015USD ($)shares	Sep. 30, 2015USD ($)segment	Mar. 31, 2015USD ($)$ / sharesshares	Sep. 30, 2014USD ($)	Jun. 30, 2015shares	Sep. 30, 2015USD ($)segment	Sep. 30, 2014USD ($)	Sep. 30, 2015GBP (£)segment
Business Acquisition [Line Items]
Number of reportable segments | segment						6				6		6
Convertible debt										$ 19,347	$ 250
Foreign currency translation loss						$ 6,126		$ 21		7,998	155
Unrealized loss on fair value						$ 2,008		$ 1,655		$ 5,097	$ 1,655
Common Stock | Novatel Wireless, Inc.
Business Acquisition [Line Items]
Amount of shares of common stock sold (in shares) | shares					586,095
GMSL
Business Acquisition [Line Items]
Minority interest percentage by noncontrolling interest (in hundredths)	3.00%					3.00%				3.00%		3.00%
Parents controlling interest (as a percent)						97.00%				97.00%		97.00%
Cost of preferred stock	$ 260,000
Percentage of ownership interest acquired	97.00%
Basis difference, net of tax						$ 12,500				$ 12,500		£ 7.7
GMSL | Trade name
Business Acquisition [Line Items]
Amortization period										3 years
Genovel Orthopedics, Inc.
Business Acquisition [Line Items]
Parents controlling interest (as a percent)						77.00%				77.00%		77.00%
GemDerm Aesthetics, Inc.
Business Acquisition [Line Items]
Parents controlling interest (as a percent)						61.00%				61.00%		61.00%
MediBeacon, Inc. | Preferred Equity
Business Acquisition [Line Items]
Preferred stock purchased (in shares) | shares		180,415
Cost of preferred stock		$ 2,900
Percentage of ownership interest acquired		9.00%
Novatel | Common Stock
Business Acquisition [Line Items]
Warrant to purchase shares (in shares) | shares				3,824,600	293,047		3,824,600
Warrant to purchase common stock				$ 8,600	$ 1,000		$ 8,600
Gain on sale of shares					$ 200
New warrant to purchase shares (in shares) | shares				1,593,583			1,593,583
Warrants, exercise price (in dollars per share) | $ / shares							$ 5.50
Percentage of ownership				23.00%			23.00%
Basis difference, net of tax				$ 5,600			$ 5,600
Novatel | Common Stock | Trade name
Business Acquisition [Line Items]
Basis difference, net of tax				$ 600			600
Amortization period				15 years
Novatel | Common Stock | Technology and Customer Intangible
Business Acquisition [Line Items]
Basis difference, net of tax				$ 800			800
Amortization period				7 years
Novatel | Common Stock | Goodwill
Business Acquisition [Line Items]
Basis difference, net of tax				$ 4,200			4,200
DTV America Corporation
Business Acquisition [Line Items]
Convertible debt							$ 3,000
Investment Interest Rate							10.00%
DTV America Corporation | Common Stock
Business Acquisition [Line Items]
Warrants, exercise price (in dollars per share) | $ / shares							$ 2
Conversion of convertible debt into shares (in shares) | shares									2,081,693
DTV America Corporation | Common Stock | January 20, 2018
Business Acquisition [Line Items]
Warrant to purchase shares (in shares) | shares				666,667			666,667
DTV America Corporation | Common Stock | March 6, 2018
Business Acquisition [Line Items]
Warrant to purchase shares (in shares) | shares				333,333			333,333
Gaming Nation, Inc. | Debenture
Business Acquisition [Line Items]
Convertible debt			$ 16,100
Investment Interest Rate			6.00%
Conversion of convertible debt into shares (in shares) | shares			8,888,889
Conversion price (in dollars per share) | $ / shares			$ 2.25
Gaming Nation, Inc. | Common Stock | Debenture
Business Acquisition [Line Items]
Warrant to purchase shares (in shares) | shares			28,126,068
Warrants, exercise price (in dollars per share) | $ / shares			$ 5
Period for varying exercise prices			2 years
Foreign currency translation loss						$ 1,200
Unrealized loss on fair value						$ 2,600

SUMMARY OF SIGNIFICANT ACCOUN44

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	9 Months Ended
	Sep. 30, 2015
Minimum
Noncontrolling Interest [Line Items]
Quarterly cycle	28 days
Maximum
Noncontrolling Interest [Line Items]
Quarterly cycle	35 days
GMSL
Noncontrolling Interest [Line Items]
Percentage of ownership interest	97.00%
Schuff
Noncontrolling Interest [Line Items]
Percentage of ownership interest	91.00%
ANG
Noncontrolling Interest [Line Items]
Percentage of ownership interest	53.00%
DMi, Inc.
Noncontrolling Interest [Line Items]
Percentage of ownership interest	100.00%
Genovel Orthopedics, Inc.
Noncontrolling Interest [Line Items]
Percentage of ownership interest	77.00%
R2 Dermatology
Noncontrolling Interest [Line Items]
Percentage of ownership interest	61.00%

BUSINESS COMBINATIONS - Narrati

BUSINESS COMBINATIONS - Narrative (Details)	9 Months Ended
	Sep. 30, 2015
Business Combinations [Abstract]
Measurement period of assets and liabilities	1 year

BUSINESS COMBINATIONS - Schuff

BUSINESS COMBINATIONS - Schuff Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	May. 29, 2014	Sep. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Business Acquisition [Line Items]
Goodwill		$ 30,665	$ 27,990
Schuff
Business Acquisition [Line Items]
Acquisition of shares of common stock (in shares)		816,414
Additional shares acquired (in shares)	198,411	7,371
Ownership interest (as a percent)	65.00%	91.00%		70.00%
Purchase price attributable to controlling interest	$ 78,750
Purchase price value (in dollars per share)	$ 31.5
Interest (as a percent)	60.00%
Fair value of noncontrolling interest (as a percent)	40.00%
Goodwill	$ 24,490	$ 24,490	$ 24,612
Common Stock | Schuff
Business Acquisition [Line Items]
Acquisition of shares of common stock (in shares)	2,500,000

BUSINESS COMBINATIONS - Schedul

BUSINESS COMBINATIONS - Schedule of Purchase Price Allocation, Schuff (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014	May. 29, 2014
Business Acquisition [Line Items]
Goodwill	$ 30,665,000	$ 27,990,000
Schuff
Business Acquisition [Line Items]
Cash and cash equivalents			$ (627,000)
Investments			1,714,000
Accounts receivable			130,622,000
Costs and recognized earnings in excess of billings on uncompleted contracts			27,126,000
Prepaid expenses and other current assets			3,079,000
Inventories			14,487,000
Property and equipment, net			85,662,000
Goodwill	24,490,000	24,612,000	24,490,000
Other assets			2,947,000
Total assets acquired			293,978,000
Accounts payable			37,621,000
Accrued payroll and employee benefits			11,668,000
Accrued expenses and other current liabilities			12,532,000
Billings in excess of costs and recognized earnings on uncompleted contracts			65,985,000
Accrued income taxes			1,202,000
Accrued interest			76,000
Current portion of long-term debt			15,460,000
Long-term debt			4,375,000
Deferred tax liability			7,693,000
Other liabilities			604,000
Noncontrolling interest			4,365,000
Total liabilities assumed			161,581,000
Fair value of net assets acquired			132,397,000
Less fair value of noncontrolling interest	$ 100,000	$ 3,400,000	53,647,000
Purchase price attributable to controlling interest			78,750,000
Schuff | Trade name
Business Acquisition [Line Items]
Trade names			$ 4,478,000

BUSINESS COMBINATIONS - Amortiz

BUSINESS COMBINATIONS - Amortizable Intangible Assets, Schuff (Details) - Schuff - USD ($)	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	May. 29, 2014
Business Acquisition [Line Items]
Ownership interest (as a percent)	91.00%		70.00%	65.00%
Noncontrolling interest	$ 100,000	$ 3,400,000		$ 53,647,000
Additional shares acquired (in shares)	7,371			198,411
Trade name
Business Acquisition [Line Items]
Estimated percentage of revenue	60.00%
Amortization period	15 years
Trade names				$ 4,478,000

BUSINESS COMBINATIONS - ANG Nar

BUSINESS COMBINATIONS - ANG Narrative (Details) - USD ($) $ in Thousands	Aug. 01, 2014	Sep. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 30,665	$ 27,990
ANG
Business Acquisition [Line Items]
Cash paid to acquire shares	$ 15,500
Ownership interest (as a percent)	51.00%
Purchase price value	$ 17,700
Fair value of noncontrolling interest (as a percent)	49.00%
Fair value of noncontrolling interest	$ 2,189
Goodwill	4,855
ANG | ANG Preferred Stock
Business Acquisition [Line Items]
Cash paid to acquire shares	$ 15,500
Shares (in shares)	15,500
ANG | Common Stock
Business Acquisition [Line Items]
Shares of common stock (in shares)	1,033,333
Shares of common stock relating to noncontrolling interest (in shares)	1,000,000

BUSINESS COMBINATIONS - Sched50

BUSINESS COMBINATIONS - Schedule of Purchase Price Allocation, ANG (Details) - USD ($) $ in Thousands	Aug. 01, 2014	Sep. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Excess of fair value of net assets over purchase price		$ 30,665	$ 27,990
ANG
Business Acquisition [Line Items]
Cash and cash equivalents	$ 15,704
Accounts receivable	306
Prepaid expenses and other current assets	31
Inventories	27
Property and equipment, net	1,921
Other assets	2
Total assets acquired	26,991
Accounts payable	49
Accrued payroll and employee benefits	5
Accrued expenses and other current liabilities	26
Billings in excess of costs and recognized earnings on uncompleted contracts	114
Current portion of long-term debt	34
Long-term debt	870
Deferred tax liability	3,349
Total liabilities assumed	4,447
Fair value of net assets acquired	22,544
Less purchase price	15,500
Excess of fair value of net assets over purchase price	4,855
ANG | Customer contracts
Business Acquisition [Line Items]
Customer contracts and trade names	2,700
ANG | Trade name
Business Acquisition [Line Items]
Customer contracts and trade names	$ 6,300

BUSINESS COMBINATIONS - Amort51

BUSINESS COMBINATIONS - Amortizable Intangible Assets, ANG (Details) - ANG - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Aug. 01, 2014
Trade name
Business Acquisition [Line Items]
Amortization period	10 years
Royalty (as a percent)	4.00%
Trade names		$ 6,300
Customer contracts
Business Acquisition [Line Items]
Amortization period	10 years
Trade names		$ 2,700

BUSINESS COMBINATIONS - GMSL Na

BUSINESS COMBINATIONS - GMSL Narrative (Details) - USD ($) $ in Thousands	Sep. 22, 2014	Jun. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill			$ 30,665	$ 27,990
GMSL
Business Acquisition [Line Items]
Cash paid to acquire shares	$ 260,000
Indebtedness	130,000
Net enterprise value	$ 130,388
Ownership interest (as a percent)	97.00%
Fair value of noncontrolling interest (as a percent)	3.00%		3.00%
Goodwill	$ 493		$ 1,016	$ 0
Carrying value of property and equipment, net		$ (5,000)
Carrying value of investments		4,600
Deferred tax liability		$ 100

BUSINESS COMBINATIONS - Sched53

BUSINESS COMBINATIONS - Schedule of Purchase Price Allocation, GMSL (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 22, 2014
Business Acquisition [Line Items]
Goodwill	$ 30,665	$ 27,990
GMSL
Business Acquisition [Line Items]
Cash and cash equivalents			$ 62,555
Accounts receivable			26,183
Prepaid expenses and other current assets			22,111
Inventories			7,395
Restricted cash			4,682
Property and equipment, net			152,022
Goodwill	$ 1,016	$ 0	493
Investments			28,876
Other assets			7,482
Total assets acquired			322,356
Accounts payable			8,965
Accrued expenses and other current liabilities			46,992
Accrued income taxes			1,251
Current portion of long-term debt			8,140
Long-term debt			78,356
Pension liability			45,923
Deferred tax liability			1,163
Other liabilities			1,178
Total liabilities assumed			191,968
Fair value of net assets acquired			130,388
Less fair value of noncontrolling interest			3,803
Purchase price attributable to controlling interest			126,585
GMSL | Customer contracts
Business Acquisition [Line Items]
Customer contracts, trade names, developed technology			8,121
GMSL | Trade Names
Business Acquisition [Line Items]
Customer contracts, trade names, developed technology			1,137
GMSL | Developed Technology
Business Acquisition [Line Items]
Customer contracts, trade names, developed technology			$ 1,299

BUSINESS COMBINATIONS - Amort54

BUSINESS COMBINATIONS - Amortizable Intangible Assets, GMSL (Details) $ in Thousands, £ in Millions	Sep. 22, 2014USD ($)	Sep. 22, 2014GBP (£)	Sep. 30, 2015USD ($)contract	Sep. 30, 2015GBP (£)contract
Business Acquisition [Line Items]
Value of customer contracts			$ 85
GMSL
Business Acquisition [Line Items]
Value of customer contracts			$ 0
GMSL | Customer contracts
Business Acquisition [Line Items]
Number of customer contracts | contract			3	3
Value of customer contracts	$ 8,100	£ 5
Amortization period			15 years	15 years
GMSL | Trade name
Business Acquisition [Line Items]
Value of customer contracts	$ 1,100	£ 0.7
Amortization period			3 years	3 years
GMSL | Developed technology
Business Acquisition [Line Items]
Value of customer contracts			$ 1,300	£ 0.8
Amortization period			4 years	4 years

BUSINESS COMBINATIONS - GMSL's

BUSINESS COMBINATIONS - GMSL's Joint Ventures (Details) - 9 months ended Sep. 30, 2015 - GMSL £ in Millions, $ in Millions	USD ($)	GBP (£)
Business Acquisition [Line Items]
Fair value		£ 17.5
Carrying value		25.2
Basis difference	$ 12.5	7.7
Accretion period	9 years
SBSS
Business Acquisition [Line Items]
Discount for lack of marketability (as a percent)	35.00%
Fair value	$ 15.8	9.7
Huawei Marine Networks Co., Ltd
Business Acquisition [Line Items]
Discount for lack of marketability (as a percent)	30.00%
Fair value	$ 7	4.3
International Cableship Pte., Ltd.
Business Acquisition [Line Items]
Discount for lack of marketability (as a percent)	20.00%
Fair value	$ 4.5	2.8
Sembawang Cable Depot Pte., Ltd.
Business Acquisition [Line Items]
Discount for lack of marketability (as a percent)	20.00%
Fair value	$ 1.1	0.7
Other Investments
Business Acquisition [Line Items]
Fair value	$ 0.5	£ 0.3

BUSINESS COMBINATIONS - Pro For

BUSINESS COMBINATIONS - Pro Forma Adjusted Summary (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Business Acquisition, Pro Forma Information [Abstract]
Net revenue		$ 223,927		$ 630,035
Net income (loss) from continuing operations		(11,009)		1,636
Net income (loss) from discontinued operations		(3,067)		(3,115)
Gain (loss) from sale of discontinued operations	$ 0	663	$ 0	(121)
Net income (loss) attributable to HC2		$ (13,413)		$ (1,600)
Per share amounts:
Income (loss) from continuing operations (in dollars per share)		$ (0.47)		$ 0.09
Income (loss) from discontinued operations (in dollars per share)		(0.13)		(0.17)
Gain (loss) from sale of discontinued operations (in dollars per share)		0.03		(0.01)
Net income (loss) attributable to HC2 (in dollars per share)		$ (0.57)		$ (0.09)

BUSINESS COMBINATIONS - Pro F57

BUSINESS COMBINATIONS - Pro Forma Adjusted Summary Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2014USD ($)
Schuff
Business Acquisition [Line Items]
Transaction costs incurred	$ 0.3
GMSL
Business Acquisition [Line Items]
Transaction costs incurred	$ 4.3

BUSINESS COMBINATIONS - Additio

BUSINESS COMBINATIONS - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Business Acquisition [Line Items]
Net Revenue	$ 277,467	$ 179,433	$ 760,257	$ 319,373
Net Income (Loss)	$ (4,570)	(15,879)	$ (20,847)	(24,387)
Schuff
Business Acquisition [Line Items]
Net Revenue		137,706		192,182
Net Income (Loss)		3,491		6,065
ANG
Business Acquisition [Line Items]
Net Revenue		460		460
Net Income (Loss)		$ (386)		$ (386)

ACCOUNTS RECEIVABLE (Details)

ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Contract receivables:
Contracts in progress	$ 116,353	$ 105,071
Unbilled retentions	29,292	32,850
Trade receivables	43,235	16,202
Other receivables	170	195
Allowance for doubtful accounts	(1,576)	(2,760)
Total accounts receivable	$ 187,474	$ 151,558

CONTRACTS IN PROGRESS (Details)

CONTRACTS IN PROGRESS (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Contractors [Abstract]
Costs incurred on contracts in progress	$ 636,345	$ 531,129
Estimated earnings	96,953	73,540
Costs incurred on contracts in progress and estimated earnings, gross	733,298	604,669
Less progress billings	716,077	618,530
Costs incurred on contracts in progress and estimated earnings, net	17,221	(13,861)
The above is included in the accompanying condensed consolidated balance sheet under the following captions:
Costs and recognized earnings in excess of billings on uncompleted contracts	37,266	28,098
Billings in excess of costs and recognized earnings on uncompleted contracts	20,045	41,959
Costs incurred on contracts in progress and estimated earnings, net	$ 17,221	$ (13,861)

INVENTORIES (Details)

INVENTORIES (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 12,294	$ 12,956
Work in process	1,697	1,779
Finished goods	417	240
Inventories, net	$ 14,408	$ 14,975

INVESTMENTS - Narrative (Detail

INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Fair value of available for sale securities	$ 2.6	$ 4.9
Cost basis in available for sale securities	6	2.4
Unrealized losses on securities	$ 3.4
Unrealized gains on securities		$ 2.5

INVESTMENTS - Long Term Investm

INVESTMENTS - Long Term Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Gain (Loss) on Investments [Line Items]
Cost	$ 78,822	$ 48,674
Unrealized Gains	2,173	0
Unrealized Losses	(3,841)	0
Carrying Value	77,154	48,674
Common Equity
Gain (Loss) on Investments [Line Items]
Cost	14,258
Unrealized Gains	1,856
Unrealized Losses	0
Carrying Value	16,114
Common Equity | Novatel Wireless, Inc.
Gain (Loss) on Investments [Line Items]
Cost	11,430	10,462
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	11,430	10,462
Common Equity | DTV America Corporation
Gain (Loss) on Investments [Line Items]
Cost	2,828
Unrealized Gains	1,856
Unrealized Losses	0
Carrying Value	4,684
Preferred Equity
Gain (Loss) on Investments [Line Items]
Cost	8,890	7,453
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	8,890	7,453
Preferred Equity | NerVve Technologies, Inc.
Gain (Loss) on Investments [Line Items]
Cost	4,619	5,538
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	4,619	5,538
Preferred Equity | Benevir Biopharm, Inc.
Gain (Loss) on Investments [Line Items]
Cost	1,429	1,915
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	1,429	1,915
Preferred Equity | MediBeacon, Inc.
Gain (Loss) on Investments [Line Items]
Cost	2,842
Unrealized Gains	0
Unrealized Losses	0
Carrying Value	2,842
GMSL Joint Ventures
Gain (Loss) on Investments [Line Items]
Cost	34,653	26,402
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	34,653	26,402
GMSL Joint Ventures | Global Cable Technology Ltd.
Gain (Loss) on Investments [Line Items]
Cost		50
Unrealized Gains		0
Unrealized Losses		0
Carrying Value		50
GMSL Joint Ventures | S. B. Submarine Systems Co., Ltd.
Gain (Loss) on Investments [Line Items]
Cost	17,680	12,882
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	17,680	12,882
GMSL Joint Ventures | International Cableship Pte., Ltd.
Gain (Loss) on Investments [Line Items]
Cost	1,181	2,111
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	1,181	2,111
GMSL Joint Ventures | Sembawang Cable Depot Pte., Ltd.
Gain (Loss) on Investments [Line Items]
Cost	1,011	808
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	1,011	808
GMSL Joint Ventures | Huawei Marine Networks Co., Ltd
Gain (Loss) on Investments [Line Items]
Cost	14,351	10,087
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	14,351	10,087
GMSL Joint Ventures | Visser Smit Global Marine Partnership
Gain (Loss) on Investments [Line Items]
Cost	430	464
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	430	464
Convertible Debt
Gain (Loss) on Investments [Line Items]
Cost	10,560
Unrealized Gains	0
Unrealized Losses	(3,398)
Carrying Value	7,162
Convertible Debt | Gaming Nation, Inc.
Gain (Loss) on Investments [Line Items]
Cost	10,060
Unrealized Gains	0
Unrealized Losses	(3,398)
Carrying Value	6,662
Convertible Debt | mParticle
Gain (Loss) on Investments [Line Items]
Cost	500	250
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	500	250
Warrants
Gain (Loss) on Investments [Line Items]
Cost	9,428
Unrealized Gains	317
Unrealized Losses	(443)
Carrying Value	9,302
Warrants | Novatel Wireless, Inc.
Gain (Loss) on Investments [Line Items]
Cost	3,097	2,956
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	3,097	2,956
Warrants | DTV America Corporation
Gain (Loss) on Investments [Line Items]
Cost	295
Unrealized Gains	317
Unrealized Losses	0
Carrying Value	612
Warrants | Gaming Nation, Inc.
Gain (Loss) on Investments [Line Items]
Cost	6,036
Unrealized Gains	0
Unrealized Losses	(443)
Carrying Value	5,593
Other Equity | Kaneland, LLC
Gain (Loss) on Investments [Line Items]
Cost	1,033	1,151
Unrealized Gains	0	0
Unrealized Losses	0	0
Carrying Value	$ 1,033	$ 1,151

INVESTMENTS - Equity Method Inv

INVESTMENTS - Equity Method Investments (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Net Revenue	$ 159,339
Gross Profit	40,736
Loss from continuing operations	(25,749)
Net loss	$ (31,192)

GOODWILL AND OTHER INTANGIBLE65

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of the Changes in the Carrying Amount of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 27,990
Effect of change in foreign currency exchange rates	0
Acquisition of business	2,675
Goodwill, ending balance	30,665
Schuff
Goodwill [Roll Forward]
Goodwill, beginning balance	24,612
Effect of change in foreign currency exchange rates	0
Acquisition of business	(122)
Goodwill, ending balance	24,490
GMSL
Goodwill [Roll Forward]
Goodwill, beginning balance	0
Effect of change in foreign currency exchange rates	0
Acquisition of business	1,016
Goodwill, ending balance	1,016
ICS
Goodwill [Roll Forward]
Goodwill, beginning balance	3,378
Effect of change in foreign currency exchange rates	0
Acquisition of business	0
Goodwill, ending balance	3,378
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	0
Effect of change in foreign currency exchange rates	0
Acquisition of business	1,781
Goodwill, ending balance	$ 1,781

GOODWILL AND OTHER INTANGIBLE66

GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Intangible Assets Subject to Amortization (Details) $ in Thousands, £ in Millions	Sep. 22, 2014USD ($)	Sep. 22, 2014GBP (£)	Sep. 30, 2015USD ($)	Sep. 30, 2015GBP (£)
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			$ 31,144
Effect of change in foreign currency exchange rates			(218)
Amortization			(2,532)
Acquisition of business			0
Asset acquisition			85
Reclassification			(1,805)
Ending balance			26,674
Corporate
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			22
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Asset acquisition			0
Reclassification			0
Ending balance			22
Pansend
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			114
Effect of change in foreign currency exchange rates			0
Amortization			(1)
Acquisition of business			0
Asset acquisition			65
Reclassification			0
Ending balance			178
Schuff
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			4,304
Effect of change in foreign currency exchange rates			0
Amortization			(224)
Acquisition of business			0
Asset acquisition			0
Reclassification			0
Ending balance			4,080
GMSL
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			9,786
Effect of change in foreign currency exchange rates			(218)
Amortization			(872)
Acquisition of business			0
Asset acquisition			0
Reclassification			0
Ending balance			8,696
ANG
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			10,918
Effect of change in foreign currency exchange rates			0
Amortization			(797)
Acquisition of business			0
Asset acquisition			20
Reclassification			0
Ending balance			10,141
Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			6,000
Effect of change in foreign currency exchange rates			0
Amortization			(638)
Acquisition of business			0
Asset acquisition			0
Reclassification			(1,805)
Ending balance			3,557
Trade names
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			11,338
Effect of change in foreign currency exchange rates			(26)
Amortization			(961)
Acquisition of business			0
Reclassification			0
Ending balance			10,351
Trade names | Corporate
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Trade names | Pansend
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Trade names | Schuff
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			4,304
Effect of change in foreign currency exchange rates			0
Amortization			(224)
Acquisition of business			0
Reclassification			0
Ending balance			4,080
Trade names | GMSL
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			997
Effect of change in foreign currency exchange rates			(26)
Amortization			(265)
Acquisition of business			0
Asset acquisition	$ 1,100	£ 0.7
Reclassification			0
Ending balance			706
Trade names | ANG
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			6,037
Effect of change in foreign currency exchange rates			0
Amortization			(472)
Acquisition of business			0
Reclassification			0
Ending balance			5,565
Trade names | Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			12,214
Effect of change in foreign currency exchange rates			(155)
Amortization			(705)
Acquisition of business			0
Reclassification			0
Ending balance			11,354
Customer relationships | Corporate
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Customer relationships | Pansend
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Customer relationships | Schuff
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Customer relationships | GMSL
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			7,333
Effect of change in foreign currency exchange rates			(155)
Amortization			(380)
Acquisition of business			0
Reclassification			0
Ending balance			6,798
Customer relationships | ANG
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			4,881
Effect of change in foreign currency exchange rates			0
Amortization			(325)
Acquisition of business			0
Reclassification			0
Ending balance			4,556
Customer relationships | Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Developed technology
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			1,456
Effect of change in foreign currency exchange rates			(37)
Amortization			(865)
Acquisition of business			0
Reclassification			4,195
Ending balance			4,749
Developed technology | Corporate
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Developed technology | Pansend
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Developed technology | Schuff
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Developed technology | GMSL
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			1,456
Effect of change in foreign currency exchange rates			(37)
Amortization			(227)
Acquisition of business			0
Asset acquisition			1,300	£ 0.8
Reclassification			0
Ending balance			1,192
Developed technology | ANG
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Reclassification			0
Ending balance			0
Developed technology | Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			(638)
Acquisition of business			0
Reclassification			4,195
Ending balance			3,557
Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			6,136
Effect of change in foreign currency exchange rates			0
Amortization			(1)
Acquisition of business			0
Asset acquisition			85
Reclassification			(6,000)
Ending balance			220
Other | Corporate
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			22
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Asset acquisition			0
Reclassification			0
Ending balance			22
Other | Pansend
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			114
Effect of change in foreign currency exchange rates			0
Amortization			(1)
Acquisition of business			0
Asset acquisition			65
Reclassification			0
Ending balance			178
Other | Schuff
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Asset acquisition			0
Reclassification			0
Ending balance			0
Other | GMSL
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Asset acquisition			0
Reclassification			0
Ending balance			0
Other | ANG
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			0
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Asset acquisition			20
Reclassification			0
Ending balance			20
Other | Other
Finite-lived Intangible Assets [Roll Forward]
Beginning balance			6,000
Effect of change in foreign currency exchange rates			0
Amortization			0
Acquisition of business			0
Asset acquisition			0
Reclassification			(6,000)
Ending balance			$ 0

LONG-TERM OBLIGATIONS - Schedul

LONG-TERM OBLIGATIONS - Schedule of Long-term Debt (Details) - USD ($)	1 Months Ended	9 Months Ended
	Jan. 31, 2014	Sep. 30, 2015	Aug. 05, 2015	Mar. 26, 2015	Dec. 31, 2014	Nov. 20, 2014	Oct. 31, 2013
Debt Instrument [Line Items]
Long-term debt		$ 389,737,000
Obligations under capital leases		53,389,000			$ 65,176,000
Other		22,000			30,000
Subtotal		389,737,000			345,716,000
Original issue discount on Senior Secured Notes		(1,879,000)			(2,345,000)
Subtotal		387,858,000			343,371,000
Current portion of long-term debt		13,454,000			10,444,000
Total long-term obligations		374,404,000			332,927,000
Senior Secured Notes Collateralized by Assets
Debt Instrument [Line Items]
Long-term debt		$ 305,000,000			250,000,000
Interest rate (as a percent)		11.00%	11.00%	11.00%		11.00%
Note Payable Collateralized by Assets | GMSL
Debt Instrument [Line Items]
Long-term debt		$ 13,432,000			16,732,000
Basis spread on variable rate (as a percent)	3.65%	3.65%
Note Payable Collateralized by Assets | ANG
Debt Instrument [Line Items]
Long-term debt		$ 698,000			810,000
Interest rate (as a percent)		5.50%					5.50%
Note Payable Collateralized by Real Estate | Schuff
Debt Instrument [Line Items]
Long-term debt		$ 4,167,000			4,635,000
Basis spread on variable rate (as a percent)		4.00%
Note Payable Collateralized by Equipment | Schuff
Debt Instrument [Line Items]
Long-term debt		$ 11,029,000			8,333,000
Basis spread on variable rate (as a percent)		4.00%
Line of Credit Collateralized by Assets | Schuff
Debt Instrument [Line Items]
Long-term debt		$ 2,000,000			0
Interest rate (as a percent)		5.25%
Interest on special interest compensation fund (as a percent)		1.00%
Credit and Security Agreement
Debt Instrument [Line Items]
Maximum amount of advances		$ 50,000,000
Credit and Security Agreement | Schuff
Debt Instrument [Line Items]
Long-term debt		$ 0			$ 0

LONG-TERM OBLIGATIONS - Sched68

LONG-TERM OBLIGATIONS - Schedule of Aggregate Debt Maturities (Details) $ in Thousands	Sep. 30, 2015USD ($)
Debt Maturities
2,015	$ 4,881
2,016	11,684
2,017	11,953
2,018	14,880
2,019	317,910
Thereafter	28,429
Total debt	389,737
Capital Leases Maturities
2,015	1,681
2,016	6,706
2,017	6,697
2,018	10,208
2,019	10,207
Thereafter	30,938
Total minimum principal & interest payments	66,437
Less: Amount representing interest	(13,048)
Total capital lease obligations	$ 53,389
Cable Lease
Debt Instrument [Line Items]
Capital leases, interest rate (as a percent)	4.00%
Innovator Lease
Debt Instrument [Line Items]
Capital leases, interest rate (as a percent)	10.00%

LONG-TERM OBLIGATIONS - 11% Sen

LONG-TERM OBLIGATIONS - 11% Senior Secured Notes due 2019 (Details) - USD ($)	Mar. 26, 2015	Nov. 20, 2014	Sep. 30, 2015	Aug. 05, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Senior secured notes original issue discount			$ 1,879,000		$ 2,345,000
September Credit Facility | Term Loan
Debt Instrument [Line Items]
Debt instrument term			12 months
Proceeds from issuance of senior secured credit facility		$ 214,000,000
Senior Secured Notes Collateralized by Assets
Debt Instrument [Line Items]
Interest rate (as a percent)	11.00%	11.00%	11.00%	11.00%
11% Senior Secured Notes due 2019
Debt Instrument [Line Items]
Aggregate principal amount	$ 50,000,000	$ 250,000,000		$ 5,000,000
Debt instrument discount percentage (as a percent)		99.05%
Senior secured notes original issue discount		$ 2,400,000
Senior secured notes premium percentage (in hundredths)	100.50%
Premiums and other costs	$ 300,000
Percentage of redemption from aggregate principal amount (in hundredths)		100.00%
Percentage of principal amount considered for redemption premium payment		1.00%
Redemption price, percentage		101.00%
Delayed Draw Term Loan | September Credit Facility
Debt Instrument [Line Items]
Proceeds from issuance of senior secured credit facility		$ 36,000,000

LONG-TERM OBLIGATIONS - Termina

LONG-TERM OBLIGATIONS - Terminated HC2 Credit Facilities (Details) - USD ($) $ in Millions	Nov. 20, 2014	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Dec. 31, 2014
September Credit Facility | Novatel
Line of Credit Facility [Line Items]
Write-off of deferred financing cost		$ 0.5
Write-off of original issue discount		4.5
Net of credit for previous paid funding fees		$ 2.3
Term Loan | Novatel
Line of Credit Facility [Line Items]
Proceeds from issuance of senior secured credit facility						$ 17
Term Loan | May Credit Facility
Line of Credit Facility [Line Items]
Debt instrument term					18 months
Proceeds from issuance of senior secured credit facility						$ 80
Term Loan | September Credit Facility
Line of Credit Facility [Line Items]
Debt instrument term					12 months
Proceeds from issuance of senior secured credit facility	$ 214
Partial Prepayments | May Credit Facility
Line of Credit Facility [Line Items]
Write-off of deferred financing cost			$ 0.1	$ 0.1
Write-off of original issue discount			1.9	$ 0.2
Payoff of Remaining Balance | May Credit Facility
Line of Credit Facility [Line Items]
Write-off of deferred financing cost			0.3
Write-off of original issue discount			2.5
Premiums and other costs			0.9
Payoff of Remaining Balance | May Credit Facility | Novatel
Line of Credit Facility [Line Items]
Write-off of deferred financing cost			0.4
Write-off of original issue discount			$ 0.8

LONG-TERM OBLIGATIONS - Schuff

LONG-TERM OBLIGATIONS - Schuff Credit Facilities (Details) - USD ($)	Oct. 21, 2014	May. 06, 2014	Sep. 30, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Outstanding debt			$ 389,737,000
Schuff | International LOC
Line of Credit Facility [Line Items]
Line of credit, maximum amount			2,500,000
Schuff | Real Estate Term Advance
Line of Credit Facility [Line Items]
Outstanding debt			$ 4,200,000	$ 4,600,000
Debt instrument term			5 years
Schuff | Note Payable Collateralized by Equipment
Line of Credit Facility [Line Items]
Outstanding debt			$ 11,029,000	8,333,000
Basis spread on variable rate (as a percent)			4.00%
Schuff | Note Payable Collateralized by Equipment | Real Estate Term Advance
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)		4.00%
Schuff | Note Payable Collateralized by Real Estate
Line of Credit Facility [Line Items]
Outstanding debt			$ 4,167,000	4,635,000
Basis spread on variable rate (as a percent)			4.00%
Schuff | Note Payable Collateralized by Real Estate | Real Estate Term Advance
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	4.00%
Schuff | Line of Credit Collateralized by Assets
Line of Credit Facility [Line Items]
Outstanding debt			$ 2,000,000	0
Interest on special interest compensation fund (as a percent)			1.00%
Schuff | Line of Credit Collateralized by Assets | International LOC
Line of Credit Facility [Line Items]
Credit agreement interest rate (as a percent)			5.25%
Interest on special interest compensation fund (as a percent)			1.00%
Schuff | Credit Facility
Line of Credit Facility [Line Items]
Line of credit, maximum amount			$ 50,000,000
Basis spread on variable rate (as a percent)			3.00%
Credit agreement interest rate (as a percent)			3.32%
Line of credit outstanding amount			$ 0	0
Schuff | Credit Facility | Real Estate Term Advance
Line of Credit Facility [Line Items]
Outstanding debt			$ 11,000,000	$ 8,400,000
Debt instrument term			5 years
Schuff | Credit Facility | Note Payable Collateralized by Equipment
Line of Credit Facility [Line Items]
Proceeds from note payable collateralized	$ 10,000,000
Schuff | Credit Facility | Note Payable Collateralized by Real Estate
Line of Credit Facility [Line Items]
Proceeds from note payable collateralized	$ 5,000,000
Schuff | Credit Facility | Note Payable Collateralized by Real Estate | Real Estate Term Advance
Line of Credit Facility [Line Items]
Proceeds from note payable collateralized		$ 5,000,000
Schuff | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit outstanding amount			$ 3,900,000
Line of credit borrowings			46,100,000
Schuff | Letter of Credit | International LOC
Line of Credit Facility [Line Items]
Outstanding debt			2,000,000
Line of credit outstanding amount			0
Line of credit borrowings			$ 500,000

LONG-TERM OBLIGATIONS - GMSL Cr

LONG-TERM OBLIGATIONS - GMSL Credit Facility (Details) - USD ($)	1 Months Ended	9 Months Ended
	Jan. 31, 2014	Sep. 30, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Outstanding debt		$ 389,737,000
GMSL | Note Payable Collateralized by Assets
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	3.65%	3.65%
Outstanding debt		$ 13,432,000	$ 16,732,000
GMSL | Term Loan
Line of Credit Facility [Line Items]
Term loan amount established	$ 20,000,000
Outstanding debt		$ 13,400,000	$ 16,700,000
GMSL | Term Loan | LIBOR
Line of Credit Facility [Line Items]
Debt instrument term		4 years 6 months

LONG-TERM OBLIGATIONS - ANG Ter

LONG-TERM OBLIGATIONS - ANG Term Loan (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Oct. 31, 2013
Debt Instrument [Line Items]
Outstanding debt	$ 389,737
ANG | Note Payable Collateralized by Assets
Debt Instrument [Line Items]
Interest rate (as a percent)	5.50%		5.50%
Outstanding debt	$ 698	$ 810
ANG | Term Loan
Debt Instrument [Line Items]
Debt instrument term	5 years
Outstanding debt	$ 700	$ 800

LONG-TERM OBLIGATIONS - GMSL Ca

LONG-TERM OBLIGATIONS - GMSL Capital Leases (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)vesselleaseextension_option	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Number of leases	2
Number of vessels | vessel	2
Lease principal amount outstanding | $	$ 53.4	$ 65.2
Innovator Lease
Debt Instrument [Line Items]
Lease expiration period	2,018
Number of lease extension options | extension_option	4
Lease extension period	1 year
Interest rate (as a percent)	10.00%
Cable Lease
Debt Instrument [Line Items]
Lease expiration period	2,023
Interest rate (as a percent)	4.00%

INCOME TAXES - Income Tax Benef

INCOME TAXES - Income Tax Benefit (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (649)	$ 4,515	$ (4,018)	$ 6,470

INCOME TAXES - NOL Limitation (

INCOME TAXES - NOL Limitation (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Nov. 06, 2014	May. 29, 2014	Mar. 31, 2014
Operating Loss Carryforwards [Line Items]
Estimated NOL carryforward amount	$ 61.1
Substantial acquisition of stock (as a percent)					5.00%
Shares of common stock issued (in shares)	25,623,982	23,844,711
Estimated amount of annual base limit	$ 2.2
Schuff
Operating Loss Carryforwards [Line Items]
Shares of common stock issued (in shares)			721,000	1,500,000
Series A Preferred Stock
Operating Loss Carryforwards [Line Items]
Shares issued (in shares)				30,000

INCOME TAXES - Examinations (De

INCOME TAXES - Examinations (Details)	9 Months Ended
	Sep. 30, 2015
Minimum
Income Tax Examination [Line Items]
Tax years open for examinations	2,002
Maximum
Income Tax Examination [Line Items]
Tax years open for examinations	2,014

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Nov. 06, 2014	May. 29, 2014
Loss Contingencies [Line Items]
Shares of common stock issued (in shares)	25,623,982	23,844,711
Second lawsuit filed in court, date	November 17, 2014
Schuff
Loss Contingencies [Line Items]
Shares of common stock issued (in shares)			721,000	1,500,000
Number of outstanding shares remaining in public hands (in shares)	341,000
Percentage of outstanding shares remaining in public hands	9.00%
Xplornet
Loss Contingencies [Line Items]
Damage amount as a result of foregoing	$ 50

SHARE-BASED COMPENSATION - Narr

SHARE-BASED COMPENSATION - Narrative (Details) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	1,406,681	1,645,685
Weighted average fair value (in dollars per share)	$ 1.55	$ 1.40
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	885,173	1,568,864
Prior Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share of common stock underlying outstanding awards (in shares)	467,371
Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (in shares)	5,000,000

SHARE-BASED COMPENSATION - Fair

SHARE-BASED COMPENSATION - Fair Value of Option Grant (Details)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected option life	5 years 4 months 16 days	6 years
Risk-free interest rate, minimum	1.49%	1.96%
Risk-free interest rate, maximum	1.68%	2.73%
Expected volatility, minimum (as a percent)	36.29%	36.74%
Expected volatility, maximum (as a percent)	40.50%	37.80%
Dividend yield (as a percent)	0.00%	0.00%

SHARE-BASED COMPENSATION - Fa81

SHARE-BASED COMPENSATION - Fair Value of Option Grant Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share based compensation expense	$ 2,300	$ 700	$ 6,943	$ 1,725

SHARE-BASED COMPENSATION - Summ

SHARE-BASED COMPENSATION - Summary of Restricted Stock (Details) - Restricted Stock	9 Months Ended
	Sep. 30, 2015$ / sharesshares
Shares
Beginning balance (in shares) | shares	338,702
Granted (in shares) | shares	1,539,114
Vested (in shares) | shares	(1,008,253)
Forfeitures (in shares) | shares	0
Ending balance (in shares) | shares	869,563
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share)	$ 4.26
Granted (in dollars per share)	9.14
Vested (in dollars per share)	8.40
Forfeitures (in dollars per share)	0
Ending balance (in dollars per share)	$ 8.10

SHARE-BASED COMPENSATION - Rest

SHARE-BASED COMPENSATION - Restricted Stock Narrative (Details) - Restricted Stock $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock	$ 3.7
Vesting period	10 months 28 days
Unvested restricted stock expected to vest (in shares) | shares	869,563

SHARE-BASED COMPENSATION - Su84

SHARE-BASED COMPENSATION - Summary of Stock Options (Details) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Shares
Granted (in shares)	1,406,681	1,645,685
Stock Option
Shares
Beginning balance (in shares)	3,573,141
Granted (in shares)	1,406,681
Exercised (in shares)	0
Forfeitures (in shares)	(764,529)
Ending balance (in shares)	4,215,293
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 5.05		$ 4.27
Granted (in dollars per share)	6.49
Exercised (in dollars per share)	0
Forfeitures (in dollars per share)	$ 4.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Eligible for exercise (in shares)	2,117,941
Eligible for exercise (in dollars per share)	$ 5.02

SHARE-BASED COMPENSATION - Su85

SHARE-BASED COMPENSATION - Summary of Intrinsic Values and Remaining Contractual Terms (Details) - Stock Option $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value, options outstanding	$ 9,021
Weighted average remaining life, options outstanding	8 years 10 months 28 days
Intrinsic value, options exercisable	$ 4,466
Weighted average remaining life, options exercisable	8 years 9 months 11 days

SHARE-BASED COMPENSATION - Stoc

SHARE-BASED COMPENSATION - Stock Option Narrative (Details) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options forfeited in exchange (in shares)	760,194
Options resulting from an option modification (in shares)	715,476
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock options outstanding (in shares)	2,097,352
Compensation expense expected to be recognized | $	$ 1.8
Vesting period	8 months 27 days
Unvested stock options expected to vest (in shares)	2,097,352
Weighted average remaining life	8 years 10 months 28 days
Weighted average exercise price (in dollars per share) | $ / shares	$ 5.05
Intrinsic value | $	$ 4.6

EQUITY - Narrative (Details)

EQUITY - Narrative (Details) - USD ($)	Jan. 05, 2015	Sep. 22, 2014	Sep. 30, 2015	Sep. 30, 2014	Aug. 05, 2015	Mar. 26, 2015	Dec. 31, 2014	Nov. 20, 2014	Nov. 06, 2014	May. 29, 2014
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)			25,592,356				23,813,085
Preferred stock, shares outstanding (in shares)			54,000				41,000
Shares of common stock issued (in shares)			25,623,982				23,844,711
Beneficial conversion feature			$ 182,000	$ 4,674,000
Convertible common shares			$ 1,000,000	$ 0
Common Stock
Class of Stock [Line Items]
Amount of shares of common stock from conversion (in shares)			235,526
Series A Preferred Stock
Class of Stock [Line Items]
Purchase price			$ 5,000,000
Series A-1 Preferred Stock
Class of Stock [Line Items]
Beneficial conversion feature			300,000
Convertible common shares			$ 11,000,000
Shares of preferred stock converted (in shares)			1,000
Series A-1 Preferred Stock | Minimum
Class of Stock [Line Items]
Intrinsic value (in dollars per share)			$ 4.25
Series A-1 Preferred Stock | Maximum
Class of Stock [Line Items]
Intrinsic value (in dollars per share)			$ 4.36
Schuff
Class of Stock [Line Items]
Shares of common stock issued (in shares)									721,000	1,500,000
Preferred stock cumulative quarterly cash dividend rate			7.50%
Preferred stock annual accretion rate			4.00%
Preferred stock redemption price per share on accrued and unpaid dividends, percentage			150.00%
Preferred stock force conversion, trading days to calculate volume weighted average price			30 days
Convertible preferred stock volume weighted average price percentage			150.00%
Volume weighted average price threshold percentage			150.00%
Preferred stock trading days to calculate volume weighted average price			20 days
Schuff | Minimum
Class of Stock [Line Items]
Preferred stock annual accretion rate			0.00%
Schuff | Maximum
Class of Stock [Line Items]
Preferred stock annual accretion rate			2.00%
Schuff | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)										30,000
Schuff | Series A-1 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)		11,000
Preferred stock conversion price (in dollars per share)		$ 4.25
Schuff | Series A-2 Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	14,000
Preferred stock conversion price (in dollars per share)	$ 8.25
Senior Secured Notes Collateralized by Assets
Class of Stock [Line Items]
Additional notes issued, percentage			11.00%		11.00%	11.00%		11.00%

EQUITY - Summary of Cash Divide

EQUITY - Summary of Cash Dividends (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Dividend Declared for Q1
Dividends Payable [Line Items]
Declaration Date	Mar. 31, 2015
Holders of Record Date	Mar. 31, 2015
Payment/Accrual Date	Apr. 15, 2015
Total Dividend	$ 1,021
Dividend Declared for Q2
Dividends Payable [Line Items]
Declaration Date	Jun. 30, 2015
Holders of Record Date	Jun. 30, 2015
Payment/Accrual Date	Jul. 15, 2015
Total Dividend	$ 1,020
Dividend Declared for Q3
Dividends Payable [Line Items]
Declaration Date	Sep. 30, 2015
Holders of Record Date	Sep. 30, 2015
Payment/Accrual Date	Oct. 15, 2015
Total Dividend	$ 1,020

FAIR VALUE OF FINANCIAL INSTR89

FAIR VALUE OF FINANCIAL INSTRUMENTS - Assets on Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Common Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 2,593	$ 4,867
Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	7,162	250
Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	612
Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	58	908
Level 1 | Common Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	2,593	4,867
Level 1 | Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Level 1 | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Level 1 | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	58	908
Level 2 | Common Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Level 2 | Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Level 2 | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0
Level 2 | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	0	0
Level 3 | Common Equity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	0	0
Level 3 | Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	7,162	250
Level 3 | Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	612
Level 3 | Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$ 0	$ 0

FAIR VALUE OF FINANCIAL INSTR90

FAIR VALUE OF FINANCIAL INSTRUMENTS - Narrative (Details)	Jun. 30, 2015$ / shares
Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments, Convertible, Conversion Price	$ 2.25

FAIR VALUE OF FINANCIAL INSTR91

FAIR VALUE OF FINANCIAL INSTRUMENTS - Changes in Balances of Level 3 Financial Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 0
Total realized/unrealized gains (losses) included in net earnings (loss)	317
Total realized/unrealized gains (losses) included in other comp. income (loss)	0
Purchases and issuances	295
Sales and settlements	0
Transfers into Level 3	0
Transfers out of Level 3	0
Balance at end of period	612	$ 0
Convertible Debt
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	250	0
Total realized/unrealized gains (losses) included in net earnings (loss)	0	0
Total realized/unrealized gains (losses) included in other comp. income (loss)	(3,398)	0
Purchases and issuances	10,310	250
Sales and settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Balance at end of period	$ 7,162	$ 250

FAIR VALUE OF FINANCIAL INSTR92

FAIR VALUE OF FINANCIAL INSTRUMENTS - Financial Instruments Measured on Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Level 1
Liabilities
Long-term debt	$ 0	$ 0
Level 1 | Common Equity
Assets
Investments	0
Level 1 | Warrants
Assets
Investments	0	0
Level 2
Liabilities
Long-term debt	324,429	276,791
Level 2 | Common Equity
Assets
Investments	0
Level 2 | Warrants
Assets
Investments	0	0
Level 3
Liabilities
Long-term debt	0	0
Level 3 | Common Equity
Assets
Investments	4,475
Level 3 | Warrants
Assets
Investments	5,134	7,988
Estimated Fair Value
Liabilities
Long-term debt	324,429	276,791
Estimated Fair Value | Common Equity
Assets
Investments	4,475
Estimated Fair Value | Warrants
Assets
Investments	5,134	7,988
Carrying Value
Liabilities
Long-term debt	334,469	278,195
Carrying Value | Common Equity
Assets
Investments	4,933
Carrying Value | Warrants
Assets
Investments	$ 9,473	$ 2,956

RELATED PARTIES - Narrative (De

RELATED PARTIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
Harbinger Capital Partners | Services Agreement
Related Party Transaction [Line Items]
Expenses	$ 0.8	$ 1.1

RELATED PARTIES - Transactions

RELATED PARTIES - Transactions and Balances Outstanding (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2015USD ($)
Supplemental Income Statement Elements [Abstract]
Net revenue	$ 3,020	$ 17,507
Operating expenses	917	2,885
Interest expense	391	1,214
Dividends received	2,440	2,440
Related Party Transaction, Due from (to) Related Party [Abstract]
Long-term debt	37,904	37,904
Accounts receivable	$ 4,556	$ 4,556

OPERATING SEGMENT AND RELATED95

OPERATING SEGMENT AND RELATED INFORMATION - Narrative (Details)	9 Months Ended
	Sep. 30, 2015segment
Segment Reporting [Abstract]
Number of reportable geographic segments	2
Number of reportable operating segments	6

OPERATING SEGMENT AND RELATED96

OPERATING SEGMENT AND RELATED INFORMATION - Operating Activity and Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Revenue
Net Revenue	$ 277,467	$ 179,433	$ 760,257	$ 319,373
Income (Loss) from Operations
Total Income (Loss) from Operations	2,403	75	6,497	(5,109)
Capital Expenditures
Total Capital Expenditures	3,837	3,400	16,751	4,064
Reportable Geographical Components | United States
Net Revenue
Net Revenue	173,348	161,402	494,511	266,390
Reportable Geographical Components | United Kingdom
Net Revenue
Net Revenue	101,327	15,678	254,396	49,360
Geography Eliminations
Net Revenue
Net Revenue	2,792	2,353	11,350	3,623
Operating Segments | Telecommunications
Net Revenue
Net Revenue	116,872	41,267	267,554	126,731
Income (Loss) from Operations
Total Income (Loss) from Operations	(523)	(1,344)	(612)	(1,241)
Capital Expenditures
Total Capital Expenditures	205	38	215	294
Operating Segments | Life Sciences
Income (Loss) from Operations
Total Income (Loss) from Operations	(1,811)	(495)	(4,736)	(1,430)
Capital Expenditures
Total Capital Expenditures	204	0	230	0
Operating Segments | Manufacturing
Net Revenue
Net Revenue	122,932	137,706	380,783	192,182
Income (Loss) from Operations
Total Income (Loss) from Operations	12,995	10,716	30,256	14,843
Capital Expenditures
Total Capital Expenditures	1,276	3,321	3,124	3,707
Operating Segments | Utilities
Net Revenue
Net Revenue	1,841	460	4,432	460
Income (Loss) from Operations
Total Income (Loss) from Operations	(164)	(758)	(638)	(758)
Capital Expenditures
Total Capital Expenditures	1,184	41	2,842	41
Operating Segments | Marine Services
Net Revenue
Net Revenue	35,062	0	105,939	0
Income (Loss) from Operations
Total Income (Loss) from Operations	4,296	0	13,074	0
Capital Expenditures
Total Capital Expenditures	816	0	10,188	0
Operating Segments | Other
Net Revenue
Net Revenue	760	0	1,549	0
Income (Loss) from Operations
Total Income (Loss) from Operations	(1,995)	0	(4,580)	0
Capital Expenditures
Total Capital Expenditures	152	0	152	0
Corporate
Income (Loss) from Operations
Total Income (Loss) from Operations	(10,395)	(8,044)	(26,267)	(16,523)
Capital Expenditures
Total Capital Expenditures	$ 0	$ 0	$ 0	$ 22

OPERATING SEGMENT AND RELATED97

OPERATING SEGMENT AND RELATED INFORMATION - Summary of Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Long-term investments
Total long-term investments	$ 77,154	$ 48,674
Property, Plant and Equipment – Net
Total Property, Plant and Equipment – Net	221,842	239,851
Total Assets
Total Assets	765,027	724,048
Reportable Geographical Components | United States
Property, Plant and Equipment – Net
Total Property, Plant and Equipment – Net	80,803	87,091
Reportable Geographical Components | United Kingdom
Property, Plant and Equipment – Net
Total Property, Plant and Equipment – Net	135,950	147,323
Geography Eliminations
Property, Plant and Equipment – Net
Total Property, Plant and Equipment – Net	5,089	5,437
Corporate
Long-term investments
Total long-term investments	38,228	20,357
Total Assets
Total Assets	106,103	91,765
Life Sciences | Operating Segments
Long-term investments
Total long-term investments	4,272	1,916
Total Assets
Total Assets	11,191	11,007
Marine Services | Operating Segments
Long-term investments
Total long-term investments	34,654	26,401
Total Assets
Total Assets	259,945	283,948
Telecommunications | Operating Segments
Total Assets
Total Assets	75,809	24,501
Manufacturing | Operating Segments
Total Assets
Total Assets	275,202	281,067
Utilities | Operating Segments
Total Assets
Total Assets	29,779	25,391
Other | Operating Segments
Total Assets
Total Assets	$ 6,998	$ 6,369

BACKLOG (Details)

BACKLOG (Details) - Schuff $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)contract
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Backlog	$ 381.6
Contracts or Purchase Orders
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Backlog	245.9
Letters of Intent
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Backlog	135.7
Five Contracts, Letters of Intent, Notices to Proceed or Purchase Orders
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Backlog	$ 122.5
Backlog percentage	0.321
Number of contracts attributable to backlog | contract	5

DISCONTINUED OPERATIONS - Narra

DISCONTINUED OPERATIONS - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2014	Feb. 28, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2013	Jul. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain from sale of segment			$ 0	$ 663	$ 0	$ (121)
Amount released from escrow		$ 3,200
York
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount released from escrow		800
North America Telecom
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration amount								$ 129,000
Gain from sale of segment							$ 13,800
Escrow received							126,000
Purchase price placed in escrow							15,250
Additional amount held in escrow							3,000
Purchase consideration placed in escrow	$ 6,450
Period of escrow to be released after closing date	14 months
Adjustment to prior period gain on disposal							(800)
Net gain from sale of discontinued operations, net of adjustment to prior period gain							$ 13,000
North America Telecom | Working Capital Adjustment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase consideration placed in escrow		$ 4,000
North America Telecom | Income Tax Related Liabilities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase consideration placed in escrow			4,800		$ 4,800
Period of escrow to be released after closing date					30 days
Reserve for escrow deposit			$ 400		$ 400

DISCONTINUED OPERATIONS - Summa

DISCONTINUED OPERATIONS - Summarized Operating Results of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Summarized operating results of the discontinued operations [Abstract]
Interest expense	$ (10,343)	$ (2,103)	$ (28,992)	$ (3,116)
Income (loss) from discontinued operations	(24)	(106)	(44)	(62)
North America Telecom
Summarized operating results of the discontinued operations [Abstract]
Net revenue	0	971	0	7,439
Operating expenses	24	1,045	61	7,387
Income (loss) from operations	(24)	(74)	(61)	52
Interest expense	0	(14)	0	(17)
Interest income and other income (expense)	0	(9)	4	(60)
Income (loss) before income tax	(24)	(97)	(57)	(25)
Income tax benefit (expense)	0	(9)	13	(37)
Income (loss) from discontinued operations	$ (24)	$ (106)	$ (44)	$ (62)

BASIC AND DILUTED INCOME (LO101

BASIC AND DILUTED INCOME (LOSS) PER COMMON SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Calculation of basic income (loss) per common share to diluted income (loss) per share [Abstract]
Loss from continuing operations attributable to HC2	$ (5,581)	$ (17,440)	$ (24,015)	$ (25,408)
Loss from discontinued operations	(24)	(106)	(44)	(62)
Gain (loss) from sale of discontinued operations	0	663	0	(121)
Net loss attributable to common stock and participating preferred stockholders	(5,605)	(16,883)	(24,059)	(25,591)
Net loss - diluted	$ (5,605)	$ (16,883)	$ (24,059)	$ (25,591)
Weighted average common shares outstanding-basic (in shares)	25,592	23,372	25,093	18,348
Weighted average common shares outstanding-diluted (in shares)	25,592	23,372	25,093	18,348
Basic loss per common share:
Loss from continuing operations attributable to HC2 (in dollars per share)	$ (0.22)	$ (0.75)	$ (0.96)	$ (1.38)
Gain (loss) from sale of discontinued operations (in dollars per share)	0	0.03	0	(0.01)
Net loss attributable to HC2 Holdings, Inc. (in dollars per share)	(0.22)	(0.72)	(0.96)	(1.39)
Diluted loss per common share:
Loss from continuing operations attributable to HC2 (in dollars per share)	(0.22)	(0.75)	(0.96)	(1.38)
Gain (loss) from sale of discontinued operations (in dollars per share)	0	0.03	0	(0.01)
Net loss attributable to HC2 Holdings, Inc. (in dollars per share)	$ (0.22)	$ (0.72)	$ (0.96)	$ (1.39)

SUBSEQUENT EVENTS (Details)

SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 05, 2015	Nov. 04, 2015	Sep. 30, 2015	Sep. 30, 2014
Subsequent Event [Line Items]
Gross proceeds from equity offering			$ 0	$ 6,000
Common Stock
Subsequent Event [Line Items]
Shares of common stock issued (in shares)			5,000	1,500,000
Subsequent Event
Subsequent Event [Line Items]
Shares of common stock issued (in shares)	7,350,000	7,350,000
Shares pursuant to an option (in shares)		1,800,000
Public offering price (in dollars per share)		$ 7
Additional shares of common stock granted (in shares)		8,452,500
Gross proceeds from equity offering	$ 59,200	$ 51,500
Subsequent Event | Common Stock
Subsequent Event [Line Items]
Public offering price (in dollars per share)	$ 7
Subsequent Event | Over-Allotment Option
Subsequent Event [Line Items]
Additional purchase of shares of common stock (in shares)	1,102,500	1,102,500
Schuff International, Inc. | Subsequent Event
Subsequent Event [Line Items]
Dividends expected to be received	$ 8,200